Choose your country
We work in partnership with many official Kymco dealers around the world.
You can select the country of your choice from the list below, whatever your choice, we can deliver worldwide!
6. CYLINDER HEAD/VALVES Downtown 300i ABS
TROUBLESHOOTING
· The poor cylinder head operation can be diagnosed by a compression test or by tracing engine
top-end noises.
Poor performance at idle speed White smoke from exhaust muffler
· Compression too low · Worn valve stem or valve guide
· Damaged valve stem oil seal
Compression too low
· Incorrect valve clearance adjustment Abnormal noise
· Burned or bend valves · Incorrect valve clearance adjustment
· Incorrect valve timing · Sticking valve or broken valve spring
· Broken valve spring · Damaged or worn camshaft
· Poor valve and seat contact · Worn cam chain tensioner
· Leaking cylinder head gasket · Worn camshaft and rocker arm
· Warped or cracked cylinder head
· Poorly installed spark plug
Compression too high
· Excessive carbon build-up in combustion
chamber
6-3