20 Most Recent 2007 Jinlun JL 50QT5 Commuter Questions & Answers

~Check 2 see if the tail lite bulb is functioning., sum is the fuse also.?.

Hi,
Check if any spark comes out from the spark plug.
Try to remove the airfilter and choke the carburetor when your starting the engine.
Hope that helps you!

Question edited for clarity and spelling, it is a 'Jinlun', not 'lum'. Question moved for Cars and Trucks to maker category. Made in China and generally regarded as disposable, they are $600 new. The pulse unit will be on one end of the crankshaft. Check the parts suppliers for a parts diagram, or here https://www.yumpu.com/en/document/read/19210652/jinlun-jl50qt-5-reservedele-scootergrisen Service Manual https://www.google.com/search?q=jinlun+jl50qt-5-00+service+manual https://www.google.com/search?q=jinlun+JL50QT-5-00 ..

jinlun 125 manual. https://www.motorcycle-manual.com/jinlun

check the charging system by puttng a multi meter across the battery with it set on >20volts dc ,it shouldn't go above 14.4 volts with the engibe revving at half throttle if it does change the regulator/rectifier they are non servicable .also make sure your bulbs are the right voltage im guessing 12 volts but as you have not said what bike it is im unsure.what make and model is it ??

Some common causes and potential solutions: Air/Vacuum Leak: If your Harley develops a vacuum leak in its air intake system, the air-fuel mixture becomes too rich. This can cause frequent stall outs, especially after the bike warms up. Vacuum leaks often occur due to dried-out or cracked air intake boots, faulty gaskets, or worn-out carburetor seals. When air escapes from the intake system, the fuel fills the empty space in the combustion chamber, altering the air/fuel ratio and negatively impacting combustion. Severe vacuum leaks can lead to excess fuel flowing into the exhaust system, causing backfiring and stalling while riding. Clogged Fuel Tank Filter/Fuel Injectors: A blocked fuel tank filter (due to coagulated fuel, moisture, dirt, or corrosion) impairs fuel flow, resulting in a lean air/fuel ratio. On fuel-injected Harleys, clogged fuel injectors produce similar symptoms. Regular maintenance, including cleaning and inspecting fuel filters, helps prevent these issues. Faulty Cam Chain Tensioner: A malfunctioning cam chain tensioner can affect engine timing and cause stalling. Regular checks and replacements are essential to avoid this problem. Faulty Cam Position Sensor: The cam position sensor plays a crucial role in ignition timing. If it malfunctions, it can lead to stalling and backfiring. Clogged Air Cleaner: A dirty air cleaner restricts airflow, affecting combustion efficiency. Regularly clean or replace the air filter to prevent this issue. Ignition System Failure: Faulty ignition components (such as spark plugs, ignition coils, or wires) can cause misfires, backfires, and stalling. Inspect and maintain these parts regularly. Compromised Battery Terminal Connection: Poor battery connections can disrupt electrical flow, affecting the ignition system. Ensure clean and secure battery terminals. Remember that diagnosing and addressing these issues may require professional assistance. Regular maintenance and timely repairs can keep your Fat Boy running smoothly on the road.

Honda C90, or Suzuki C90? all questions need full 'year make model'. Google it plus 'engine number location'. ..