Specifications

CYLINDER HEAD / VALVES
● Engine top-end problems usually affect engine performance. These can be diagnosed by a compression or leak down
test or by tracing noises to the top-end with a sounding rod or stethoscope.
Low compression
● Valves
- Incorrect valve adjustment
- Burned or bent valve
- Incorrect valve timing
- Broken valve spring
- Uneven valve seating
● Cylinder head
- Leaking or damage head gasket
- Warped or cracked cylinder head
● Cylinder head defect
Excessive smoke
● Worn valve guide or valve stem
● Damaged valve stem seal
● Worn or damaged piston ring
Rough idle
● Low cylinder compression
Compression too high
● Excessive carbon built-up on piston or combustion chamber
Excessive noise
● Incorrect valve adjustment
● Sticking valve or broken valve spring
● Damaged or worn camshaft
● Worn rocker arm and / or shaft
● Loose or worn cam chain
● Worn or damaged cam chain tensioner
● Damaged cylinder head gasket
● Incorrect spark plug installation
TROUBLESHOOTING
TOOL
-VALVE GUIDE REAMER
-VALVE GUIDE DRIVER
-VALVE SPRING COMPRESSOR