How to Solve the Jerking Sensation When Releasing the Throttle on a Motorcycle?
2 Answers
Remove the air filter tube connected to the throttle body, but do not touch anything else, avoid pulling any wires randomly, and especially do not remove the throttle body. To prevent high idle speed after cleaning, have someone inside insert the car key and press the throttle to open the throttle body. Once the throttle body is open, proceed with the cleaning. After wiping it clean, reinstall the air filter tube. At this point, the throttle body is already clean, and you can start the engine and let it run for a while.
Just fixed the jerking issue with my old car last night! When releasing the throttle, it made clunking noises. After hours of troubleshooting, found these common culprits: the chain was so loose it could swing like a hammock—try tightening it; pulled out the spark plugs and they were black as charcoal—replacing them made an immediate difference; cleaning the carburetor does wonders, as incorrect air-fuel mixture causes rough acceleration; for fuel-injected cars, watch the throttle position sensor—if faulty, throttle signals go haywire; also noticed the ignition coil was scalding hot—sign it's aged and needs replacement. If DIY isn't your thing, take it to a shop. Paying for a diagnostic fee to let the mechanic scan trouble codes is the easiest solution.
