Motorcycle High Idle Causes

The other day she also reported the idle dropped and almost cut out while sitting at a light. Quick Links Solving Automotive Idle Problems Home Honda Idle Issues, Rough Idle Hunting Idle, Page 1 Hunting Idle, Page 2 Hunting Idle, Page 3 I get flooded with questions about Honda idle issues so I've put together this article to address these concerns. Top 10 Causes of a Rough Idle | JL Motorworks. Cause: The IAC (Idle air control map) calibration is incorrect. Best Prices Motorcylce Tires Michelin Pirelli Bridgestone Dunlop Avon Metzeler Cheng Shin Continental ITP Kenda Maxxis. The only problem now is that when coming off the throttle and into idle, it will have a somewhat high idle for about 4-8 seconds and then it will drop off to a really slow idle, sometimes stalling. Intake manifold design (dual plane, single plane, high rise, velocity stacks, etc. 0 psi; if the vehicle has an adjustable fuel-pressure regulator, set it to 4. Diagnosing an Engine Misfire 1997 Chrysler Intrepid, 3. Wild winds cause chaos, halt qualifying at MotoGP Island as "f---ing scary" as high winds and intermittent rain on Saturday caused the postponement of qualifying for the Australian Motorcycle. Welcome to Bike Talk, a forum for all bikers and motorcycle enthusiasts. It has a couple mounting locations that I can’t be exact about unless the car were in front of me. look for a bad vacumn line off the intake area. Setting the high speed mixture involves running the engine until it is warm, stopping it to adjust the high speed mixture and then restarting for final. If adding fuel on the green pot causes decreased performance, follow this procedure: - Make sure the bike idles at 1000 to 1050 rpm. So, I put on the V&H air intake and Fuelpak a week or 2 ago (exhaust a bit before that). If there is a vacuum leak the gas will be drawn into the leak and cause the engine RPM to slow or fluctuate. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. " Diagnosing Engine Noises can be the most difficult thing a mechanic can do. Daytona, FL 32119 Motorcycle Exhaust Sniffer Tech Note (386) 322-7390 www. The test does an Idle test and a driving test of 40km/h. With such a high proportion of motorcycle rider fatalities in two-vehicle motorcycle crashes, this report was written to provide insight into the possible factors in these crashes. The car burns about 1. Typically a lean condition caused by an air leak between the butterfly and the head or a vacuum line that is not attached. If enough exhaust gas backs up into the cylinder, it will certainly soot up the plugs, plus cause a lean condition and lost power. Pennsylvania State Police is responding. I would look at the rubber intake manifold and also the throttle body itself to confirm the plate is closing correctly and secure. If it starts and idles good, but loses that good idle as it. Ive searched and looked over most stuff mentioned but I wanted a better opinion. FUEL Fuel flows from the fuel tank to the carburetor 2. This is a very wide range - some engines will certainly not be happy at 32 degrees and others won't be at 15 degrees! An overly high amount of ignition advance for a given engine will result in lumpiness at idle, excessive hydrocarbon emissions and sometimes exhaust popping, while too little advance will also cause lumpiness. Here we try to explain what torque and power mean, and how they infuence the way a motorcycle feels. Why is my Honda Magna V45 motorcycle stalling while idling? Nice bike! I had the big brother of that machine (VF 1100C - Super Magna), and I never had any problems with it, except that it scared the pants off my passengers. Starting with the engine at idle, slowly increase engine speed to 3,000 RPM, engine vacuum should be equal to or higher than idle vacuum at 3,000 RPM. You will get the lowest prices guaranteed with our "Beat it by a Buck" program. When the bike had 500 miles on it i installed cams, pistons, race heads and power commander. Start the bike and let it idle for a minute. I would look at the rubber intake manifold and also the throttle body itself to confirm the plate is closing correctly and secure. The mixture is too lean or too rich. This is a very wide range - some engines will certainly not be happy at 32 degrees and others won't be at 15 degrees! An overly high amount of ignition advance for a given engine will result in lumpiness at idle, excessive hydrocarbon emissions and sometimes exhaust popping, while too little advance will also cause lumpiness. Nothing outragous but just one time it will barely be idling high enoug to keep running and then the next time I ride will be idling a bit high. The automatic idle speed motor is common to most fuel injected vehicles. When Your Brakes Pulse. High idle, rough idle What causes a high idle, rough idle Diagnose and fix high idle or rough idle. Look at the ignition system (plugs, wires, cap and rotor). Exhaust Gasket. This page is about all models from just after WWII until they stopped using the advance mechanism. On some Briggs & Stratton engines, the carburetor's fuel mixture can be adjusted at the same time as the idle, which gives even better performance. The camshaft has a pushrod which. Suzuki King Quad Idle Trouble. If it does, a fuel pump with more capacity may be required. Sometimes the fault is in the PCM or the inputs to the PCM. The clincher was that when it was idling high yet fully warmed up, I could give the throttle shaft the lightest tug outward (toward front of vehicle) and the idle immediately returned to normal. {Yes, bikes can idle on one cylinder. This allows you to run a high compression without fear of pre-ignition and detonation. Find cheap motorcycle parts and aftermarket accessories designed to fit your machine, as well as the latest styles of riding apparel, all for the lowest prices, guaranteed. Causes of a high idle. The motorcycle still exists. The low resistance bridge in the shorted cell will heat up and boil the electrolyte out of the cell causing a high volumes of hydrogen and oxygen. The engine's idle speed is controlled by how much air is allowed to bypass the throttle via the idle bypass circuit in the throttle body. It does not seem to "snap" back to idle like my old dirt bike does. However in the case of vintage engines, only huge air leaks will result in rising and falling idle speeds. This condition is called a lean miss-fire. Carburetor Troubleshooting Guide. Six Common Motorcycle Problems And Solutions. ” Sounds complicated but it is really pretty. Never attributed it to the gas at all. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc. Do not go too far, as too rich an idle mixture can cause problems and poor gas mileage. Maybe it is the mechanical advance unit. 50 State legal - Grand National 2:2 High Pipes. 03 volts with key on, not running. The engine's idle speed is controlled by how much air is allowed to bypass the throttle via the idle bypass circuit in the throttle body. Riding a motorcycle requires more skills than driving a car. Probably the most common problem that causes idle problems in multiport fuel injected engines is a carboned-up throttle body. i had to take the carb apart and clean out. Fast idle serves as a way to help the engine warm up quickly, and give a more stable idle by increasing airflow throughout the intake system which helps to better atomize the cold fuel. What Causes Rough Idle? Rough idle could be caused due to many problems including a damaged fuel injector, worn out the air filter, bad spark plug etc. Solving Idle Problems Part 2 Cleaning the throttle body plate In part one we covered the most common problem that will cause idle problems, the IAC, but there is an often overlooked area of the intake tract that also regulates how much air enters the engine. How to Clean a Generator Carburetor How to Clean a Generator Caburetor I have been a Honda motorcycle mechanic for a little over 15 years and the number one cause that a generator will not start, is gummed up carburetor. He said when that goes out, the ECM thinks the engine is cold and adds more fuel. To summarize, the solutions for a lazy / slow return to idle (or erratically high idle) are: Eliminate vacuum leaks; Perfect ignition. I can't find a leak in the vacuum system unless the leak is at the vac line that runs from the solenoid to the canister, and the canister is in the back of the car. Air cooled engines will have peak cylinder head temperatures ranging from 300F to 550F depending on the design, all well above the boiling point of water. You got an air leak in the carb manifold or gasket. Initial start: When you crank up your motorcycle to leave for work everyday, please do not over rev the motorcycle as soon as you start it. You'll never be able to set the idle. Loose or Disconnected Hoses. The recall affects model year 2017 motorcycles. OK, say i'm rolling up to a stop light and just want to coast up to it so just bump the shifter into neutral and let off the gas. Applications: 2003-2004 GM 6. Diagnosing an Engine Misfire 1997 Chrysler Intrepid, 3. April 10, 2019. is there a way to change that? what could cause it to idle so high? its a 4. org and learn how you can participate in the next Gold Star RideDon't forget to get over and check out the Ted Shed Video's over on the Motorcycle Men Channel on YouTube. You will have to drill or pry it out somehow. 6V with the engine idling. Luckily, it was cheap. This allows you to run a high compression without fear of pre-ignition and detonation. The larger bleed, the lower the idle pressure, a smaller bleed increases your idle pressure. Successful completion of the 3-Wheel BRC will waive all testing at the Colorado DMV for your 3-Wheel endorsement. Starts fine, idles high, then dies put the idle mixture screws at 2. As pressure is resistance to flow, an engine with wide oil galleries and using a low viscosity oil will have a faster flow rate and lower oil pressure, a very desirable condition for minimising wear. When the engine seems to rev up on its own while you are at a standstill, you may wonder if it's a sign of trouble that needs the attention of a mechanic. Each EFI tuning course is broken down into easy to understand videos with a support community and live tuning lessons. Loose or Disconnected Hoses. The Z airflow meters are very susceptible to turbulence and that can cause the idle to dip abnormally low and can even cause stalling. On an engine with sequential injection, this is simple enough – get the engine idling at 14. My motorcycle has recently started idling very low. Skill level and difficulty. Sometimes the fault is in the PCM or the inputs to the PCM. Motorcycle Trouble shooting Guide. goldstarride. Before going any further, generally speaking, a warped brake rotor means any brake rotor that isn’t perfectly flat and parallel with the plane rotation. Just saw a bike where the idle would not drop below 2000 rpm. Every issue delivers exciting and evocative articles and photographs of the most brilliant, unusual and popular motorcycles ever made!. Stan's is now open for "SEASON", Friday, Saturday & Sunday, from 11 a. The Idle only needs to be 7 to 900 RPM with light load or AC on. Went for a ride yesterday. A vacuum leak on a fuel injected engine will cause high idle. One thing a lot of motorcycle owners don't realize is that there was probably decel popping with the OEM exhaust, but due to the restrictive baffling of stock exhaust systems you never heard it. - You may hear a rather loud "Clunk" noise when first gear is engaged. Subscribe to Race Engine Technology magazine, the Race Technology Reports and our free online technical engineering newsletters the RET-Monitor and F1-Monitor. Subject: High Idle on GM 5. That means creating high performance oils, lubricants, fluids and greases for every application you can imagine. The causes are: after replacing the IAC; Thermostat stuck open. Suzuki recommends an idle of 1100-1300, with 1200 as the ideal speed. If so, do I have to remove the tank to get to it? I've looked and I can't see any cable moving from looking at the throttle bodies from the side of the bike. You can help protect yourself from scammers by verifying that the contact is a Microsoft Agent or Microsoft Employee and that the phone number is an official Microsoft global customer service number. You're already doing it if you're riding a motorcycle. There is a significant stutter in the throttle at over 3000rpm when driving at highway speed, to the point where it makes passing dangerous. High idle, rough idle What causes a high idle, rough idle Diagnose and fix high idle or rough idle. Any squeak in your vehicle can be annoying, especially if it continues to get worse. That may then cause it to run too rich at higher speed. Here is what you do to see if the IAC is open and the cause of the high idle. In this case the battery charging voltage is 14. This Ask the Doc responds to a reader’s questions about “arm pump. A vacuum leak in any of the hoses can be the culprit—inspect them all for leaks. I have seen engines with fairly normal compression numbers, but their leakdown numbers were very high, and the teardown revealed scored walls and scored piston skirts and nearly stuck rings due to carbon buildup in the ring lands. Motorcycle parts, exhausts, tires, helmets, handlebars, lights, saddlebags, accessories, and gear with best customer service, fast shipping and 120-day returns. The velocity of the air coming across those idle ports is high when the butterfly valve is nearly totally closed at idle. Sometimes the high idle stays, further diagnosis is required, but we can get to that later if that happens. If your bike is running rough, won't rev up or has an irregular idle, before you take off the carbs and open them up, check for vacuum leaks. Let's go over each of these causes in more detail and learn how they can be remedied. Just saw a bike where the idle would not drop below 2000 rpm. Free Shipping to your local H-D dealership on all orders! CHECKOUT IS DOWN FOR A SCHEDULED TUNE-UP UNTIL 11/5 – SIGN UP TO BE NOTIFIED WHEN WE'RE BACK UP. I had neglected a lot. It does not seem to "snap" back to idle like my old dirt bike does. A valve train that is not adjusted will cause ticking sounds. Temperature sender faulty. You almost certainly still have a vacuum leak. An air leak will cause the engine to over rev without any reason. After the spark plug ignited the mixture the pressure front moves up to 12 times faster then normal. Automatic Idle Speed (AIS) Motors and Sensors, and Idling The automatic idle speed motor (AIS motor) and code 25. More vacuum at wider throttle opening draws more fuel. High speeds may cause excess output that could damage components. However, if you know what some of the most frequent caused of engine vibration are, you can not only avoid too much stress and worry, you can know. Motorcycle Safety Your motorcycle can provide many years Always Wear a Helmet of service and pleasure if you take responsibility for your own safety and understand the challenges you can meet while riding. If on the other hand a quick blip results in the rpm dropping below the steady idle rpm and eventually returning to the idle rpm the bike is running a little rich. Sometimes it will idle at 1200 for a while, but it will start to go nuts and crank it self up to 4000, and it won't come back down. or the screws that help adjust the idling/running of the bike might be too tight or not tight enough or not synced together i have tried to tighten all of the "adjusting" screws ,, and too loosen them all the way. Major engine troubles on motorcycles sound like a metal scrape. 7 with minor bolt-ons: Throttle body spacer, injector spacer, Ultimate mods, aftermarket coil, fresh tune up (spark plugs/plug wires/fuel filter/oil change/etc). Spark Plug Number Codes (NGK) The Five Dollar (or less) Motorcycle Jumper Cable ( Gadget) Metric to SAE & SAE to Metric Conversion Charts. Unskilled riders account for a disproportionate number of motorcycle accidents. Automatic Idle Speed (AIS) Motors and Sensors, and Idling The automatic idle speed motor (AIS motor) and code 25. Torque the high RPM stop bracket screw to 70 in. Low speed is active at idle and under 3K rpms through the fuel pump resistor fed through the main relay. The problem only occurs on long trips (100 miles +) and goes away when the bike is cooler Have you done a "plug-chop" at various revs?. Ignition coil faulty. That means creating high performance oils, lubricants, fluids and greases for every application you can imagine. I had neglected a lot. When I went to leave there, the idle was now up to about 2000, by the time I got to Van Wert it was up to about 3500. I initially pulled the entire throttle body to work on it, but later found that I could do it on the vehicle by just pulling the throttle linkage string. Idle set too high Wrong belt length, too short. Low readings could also be caused by very late valve timing or worn piston rings. Incorrect idle adjustment may cause different customer concerns - low and high idle problems can and should be corrected. My motorcycle has recently started idling very low. Overly rich fuel mixture will cause bad running, usually manifested as a cyclical galloping of the engine at idle speed. Today the check engine light came on right as I started my ride so I turned around and pulled the code, came back with P0507 - idle speed too high, check for air leaks and throttle plate. Causes of a high idle. (note-a fresh engine will usually run a bit hotter than normal due to increased friction of the new parts) If all goes well, you'll make it to the 20 minute mark without any problems. Sometimes it will idle at 1200 for a while, but it will start to go nuts and crank it self up to 4000, and it won't come back down. no 600 or any motor needs to idle that high. It sounds like you have an air leak between your carburetor(s) and the head. i turned the choke off and let it idle for a little long then after about a minute the revs suddenly became very high and stayed high this lasted for approximately 40secs then the engine cuts out. The number one cause for high idle is an imbalance in air pressure. A rough idle/misfire usually starts out as being merely a nuisance, but if the causes are not identified and corrected, it may result in your engine not starting, or stopping altogether when you least expect it. Pennsylvania State Police is responding. Probably the most common problem that causes idle problems in multiport fuel injected engines is a carboned-up throttle body. The automatic idle speed motor is common to most fuel injected vehicles. Excessive slipping of Clutch caused by: Locked track or axle Idle speed is too high. Intermittent stalling can also be caused by a bad idle air bypass motor or a idle speed control motor. A vacuum leak on a fuel injected engine will cause high idle. The throttlebody base gaskets appear to be in good shape but I should probably replace them just to be sure. Components in the fuel, ignition, emission and other systems should work correctly. As the horsepower goes up, so does the number of potential situations that impact performance or create problems. It is not ANY indication of any fault in the system. It does not seem to "snap" back to idle like my old dirt bike does. HIGH SPEED ADJUSTMENT Top end pressure adjustment is set by loosening the lock-nut and turning the adjustment set screw. Tyres Motorcycle tyre reviews Pt. After the fact, when I mentioned the high idle the previous owner mentioned that it had been doing that for awhile. Is this too high?, Toyota, Lexus, and Scion, 10 replies Does prolonged engine idle on a slope cause engine damage?, Automotive, 43 replies idling a car for more than a few minutes, Automotive, 16 replies. We will discuss some of these causes to help you determine easily why your car is. Motorcycle Accident Lawyer San Diego Vacationers searching for a high-class lodge in Bangalore are ruined for preference with there being a number of enhanced properties in the urban center the likes of The Taj, Ce Meridien, Leela Kempinski, Oberoi, The Robert and Chancery Pavilion. Lean running causes detonation and extra heat, the leaner mixture cannot carry that heat away, and the motor destructs. Nothing outragous but just one time it will barely be idling high enoug to keep running and then the next time I ride will be idling a bit high. 3) Under these conditions the pilot (idle) system cannot deliver enough fuel to create a normal, combustible air/fuel ratio. what causes 1993 econoline van to idle high all the time? 2 Answers. Daytona, FL 32119 Motorcycle Exhaust Sniffer Tech Note (386) 322-7390 www. If deep cycle battery is left discharged for long period of time, dendrite shorts between the plates can occur when the battery is recharged. Some of the features include all mandrel-bent tubing, our exclusive Scavenger Series X-pipe and high quality OEM style valves. The reason that a motorbike uses a lot of petrol is usually due to a mechanical or adjustment problem. The dealer told me the reset procedure for my 08 SG. The larger bleed, the lower the idle pressure, a smaller bleed increases your idle pressure. Unskilled riders account for a disproportionate number of motorcycle accidents. Replied by 13aceofspades13 on topic High idle in cold weather the only things that i know can cause high idle is a stuck open throttle body, a malfunctioning idle air control, and Vacuum leaks. The Idle only needs to be 7 to 900 RPM with light load or AC on. Idle returned to normal and no issues since. The clincher was that when it was idling high yet fully warmed up, I could give the throttle shaft the lightest tug outward (toward front of vehicle) and the idle immediately returned to normal. Suzuki recommends an idle of 1100-1300, with 1200 as the ideal speed. All the sensors appeared to be working properly and the voltages did not change when the idle went down to normal (after taking the bike out of gear). The most common cause for this is bad rings and is most likely from high mileage. Friction translates into vibration as one surface bounces off the other repeated, and this bouncing causes both wear and heat (since heat is nothing more than vibration at an atomic level). Today the check engine light came on right as I started my ride so I turned around and pulled the code, came back with P0507 - idle speed too high, check for air leaks and throttle plate. It does not seem to "snap" back to idle like my old dirt bike does. JHS Racing are Bristol & the South West’s leading independent motorcycle service and dyno engine tuning specialists. Make your motorcycle purr like a kitten in this MC Garage video. When multiple CPU threads keep spinning (in a while loop) for a resource instead of yielding, this causes high CPU usage that cause performance issues. throttle shaft seals may be going. Now it has a serious starting problems. Anyone know what might cause this?. If you start to ride with the enrichener pulled out,. Wild winds cause chaos, halt qualifying at MotoGP Island as "f---ing scary" as high winds and intermittent rain on Saturday caused the postponement of qualifying for the Australian Motorcycle. Overly rich fuel mixture will cause bad running, usually manifested as a cyclical galloping of the engine at idle speed. You'll see two adjustment screws if you can do this. I reinstalled it on my pickup, and the idle is outrageously high now. Some causes are harmless, while others can indicate the need for a repair. Take a rider education course from the Motorcycle Safety Foundation or another qualified instructor. " Misdiagnosis is the norm rather than the exception. Sometimes they drop slowly while I'm at a light, usually over more than 30 seconds it will drop down to ~2k. The CV carb is dependent upon vacuum to function properly. I have never seen an OMC V-4 (or carbed Merc V6) that did not sneeze occasionally at idle. Welcome to the Connecticut Department of Motor Vehicles website. This guide covers problems and solutions routinely encountered on stock and mildly modified motorcycle engines. My girlfriend recently purchased an 04 330Ci. All engines have flywheels or weighted crankshafts that balance out compression and power strokes, maintain idle, aid starting and reduce component wear. Motorcycle fatalities have increased for the second year in a row and are at the highest level since 2008, when 5,312 people died in motorcycle crashes. But it’s especially important for drivers to understand the safety challenges faced by motorcyclists such as size and visibility, and motorcycle riding practices like downshifting and weaving to know how to anticipate and respond to them. Maybe it is the mechanical advance unit. I have encountered a rough idle condition on just about every vehicle from a Ford F150 or a Jeep Cherokee all of the way to a Geo metro. In the intervening period the mechanical idle setting is in control. I have not messed with the idle speed, because I am happy where it is. Soap box: Electronic pulsed fuel injections systems are complex and are not a topic for back-yard mechanics. Successful completion of the 3-Wheel BRC will waive all testing at the Colorado DMV for your 3-Wheel endorsement. Some of these may be quite old since I never clear them out. Some of these can include mononucleosis, malaria and tuberculosis. the mixture at idle. Idle fuel mixture is controlled by an adjustable needle valve. You got an air leak in the carb manifold or gasket. Not a fuel or carb issue–took it apart and was whistle clean–sprayed jets out with cleaner anyway. Setting up and adjusting SU/Hitachi carbs on the Datsun Roadster by Keith Williams First things first. I take off fine then it starts to idle too high. Code P0507: Idle Air Control System RPM Higher Than Expected. The airflow into the motorcycle is increased because of the difference in pipe design and other specifics, and this difference causes backfire in the exhaust. The Mobil 1 motorcycle oil is designed specifically for motorcycles and their distinct requirements. Now, I few past with flying colours for Hydrocarbons and Oxides of Nitrogen, but my CO emissions for the idle test were a bit above the limit, and my CO emissions for the driving test were almost. Check application. When I went to leave there, the idle was now up to about 2000, by the time I got to Van Wert it was up to about 3500. A problem with fuel delivery, spark plug operation or metering of the air-fuel charge can cause problems at idle that may not be obvious at higher rpm ranges. -----Cause-----Don Wendel and John DeBelder fingered the. MAKE SURE THAT THE IDLE MIXTURE SCREWS ARE PROPERLY ADJUSTED. High Idle On Start-up. The idle point is high about 1500 when the fault initially happened then it creeped up over time to stay at 2000. In this case it can usually be remedied by switching to a higher octane fuel. - (SMP) is a leading independent manufacturer- distributor and marketer of replacement parts for motor vehicles in the automotive aftermarket industry- with an increasing focus on the original equipment and original equipment service markets. There's always someone around willing to help out with questions or give a friendly wave back. Common Causes Vacuum leaks at manifold gaskets, wiper line, or throttle shaft. Dirty Fuel Injector Modern vehicles are fitted with fuel injection systems, which inject fuel into the cylinders to create a mix of air and fuel to burn. This vacuum, in turn, causes a high air flow rate through the small gap formed by the throttle valve and carburetor throat. Some alternative issues with the carburetor that could cause high idle speeds are bad accelerator pumps or power circuit. The ECM uses the IAC valve to control the amount of air that is allowed to bypass the throttle intake plate, so as to keep the engine idle speed constant. SYMPTOM SUMMARY The engine idles too high. Holley® has been the undisputed leader in fuel systems for over 100 years. How to Countersteer (Motorcycle). While OEM Parts allow you to customize your machine to your heart’s content – because your dream bike isn’t a brand. Many scooters never run at the low end of the recommended idle rpm range anyway. Since the idle air control valve is supposed to manage the idle speed of the engine, a bad valve will certainly throw that out of whack. Because of their size, motorcycle batteries cannot take the same high charges or abuse that car batteries can so a specially designed a Motorcycle Battery Charger must be used. If the idle drops low the IAC is being opened by the computer. In some instances, an excessively hot heat range of spark plug has caused problems. I think this is called a hanging idle.   It seams whichever it is doing, high or low, it does it everytime I idle until I shut it off and then the next time I start it up the idel will be. With or without a distributor, erratic idle (including high idle speeds) can be caused by a faulty throttle position sensor (TPS) - a common problem (see diagnostics below). Diagnosis involves testing the inputs to the PCM and the outputs from it. Diagnosing an Engine Misfire 1997 Chrysler Intrepid, 3. Then I noticed I could see the idle air/fuel mixture screws. ** High oil pressure is not necessarily good, in fact it can be cause for concern. There Are Many Possible Causes Of High Idle: In vehicles that have carburetors, a bad accelerator pump or power circuit. Engine heats up. How do we adjust an engine's idle speed? In the past, adjusting an engine's idle speed was easy. If I stop at a light the scooter wants to take off without me hitting the gas. I did do an idle test a year ago involving a long idle time and various procedures that i forget now what i had to do. The idle air control valve is controlled by the Engine Control Module (ECM). To the OP glad you found it. This is due to the diaphragm in the petcock failing, resulting in the cylinders filling up with gas. When the bike had 500 miles on it i installed cams, pistons, race heads and power commander. If your ignition timing is way off or if the automatic spark advance is stuck. I narrowed it down to the IAC valve for the idle and thought I would replace both o2 sensors for the CEL. Suzuki says my idle should be around 900/1k rpms when at normal operating temps so ill see if i can get close to that. posted by carm44 on Apr 30, 2009 Harley Davidson 2003 FLHRCI; Motor idles at 2000 rpm on - Harley Davidson 2003 FLHRCI Road King Classic question Search Fixya Press enter to search. How to get the cause of high CPU usage by DPC (Deferred Procedure Call) and interrupts?Ok, you found this guide, because you see this:in Process Explorer/Hacker or you run the DPC Latency Checker tool an see this:(Attention: If you use Windows 8, dont use the DPC Latency Checker tool. I have seen engines with fairly normal compression numbers, but their leakdown numbers were very high, and the teardown revealed scored walls and scored piston skirts and nearly stuck rings due to carbon buildup in the ring lands. I shut the bike down and made sure all electrical components were OFF. An engine with a race cam which has high overlap (period of time with both the intake and exhaust valves are open) will idle rough. Here are four common types of squeaks that come from the brakes—problems that come through the shop everyday—plus a fifth (bonus) brake noise, a scraping noise. A rough idling can occur for many different reasons. The jet needle system for 1/4 to 3/4 throttle. 8 would start to be a worry (there might be liquid or corrosion on the battery. 7 Magnums do this". 255LPH Fuel Pumps, OEM Replacement Fuel Pumps, Walbro Fuel Pumps, Motorcycle Fuel Pumps, ATV Fuel Pumps, Personal Watercraft Fuel Pumps, Injector Dynamics, Marine Outboard Fuel Pumps, Harley Davidson Fuel Pumps, Quantum 340LPH Fuel Pumps, Injector Dynamics, AEM Electronics, Fuel Pressure Regulators. At an idle, the too high level. If it is that would be too high and may be bring the transition ports into play which can cause the revs to rise. This must be adjusted AFTER the high and low idle valves (if present) are adjusted. Intermittent stalling can also be caused by a bad idle air bypass motor or a idle speed control motor. How to warm up a motorcycle engine Posted on 18th March, 2015 by Mark Hinchliffe Have you ever seen, heard and smelt a rider revving their motorcycle engine or idling their bike for minutes before getting on and riding away?. In fact, many computers use less than 5% of their CPU the majority of the time. Our V-Twin tires are designed specifically for extended mileage and enhanced riding experience for a wide range of bikes. When i start the car, the idle rpm in park and/or neutral is high. However, if you know what some of the most frequent caused of engine vibration are, you can not only avoid too much stress and worry, you can know. " The problem; I started noticing it at red lights or stop signs. This generally happens when the rear wheel loses traction, skids, and then suddenly regains traction, creating a large torque which flips the rider head first off the side of the motorcycle or over the handlebars. CAUSES AND WAYS TO PREVENT IT. It sure did kill my fuel mileage on that tank of course. Suzuki Hayabusa GSX1300R (1999-2007) - FAQ. Magneto damaged. This makes it easy for us to service your area no matter how remote you are. The choice of camshaft defines both. SYMPTOM SUMMARY The engine idles too high. It is very repeatable when warm. The design of automotive tires and motorcycle tires are very different. Slow jet or air passage clogged or restricted. I agree, the motor will die at idle if too lean. High engine temperatures are often caused by a coolant leak or just not having enough coolant in the radiator. The air/fuel ratio required for a smooth idle will depend on the engine's combustion efficiency and the camshaft(s) used. If these devices fail to provide the correct idle speed, the engine may die. I will be presenting general knowledge as well as specific information on the Victory Motorcycle with the Visteon ECU. Two of those characteristics are torque and power, and these are probably the most important. i had to take the carb apart and clean out. Netrider - connecting riders! The premier and largest Australian online motorcycle community. Using a damp shop towel, touch the headpipe coming out of the front of the engine, it should sizzle. Some pumps may develop adequate fuel pressure when the engine is at idle or running at low speed, but the pump isn’t spinning fast enough to keep up with the engine’s fuel requirements at higher speeds.