• Engine top-end problems usually affect engine performance. These problem con be diagnosed by a compression test or by tracing engine noises to the top-end with a sounding rod or stethoscope.

• If the performance is poor at low speeds, check for while smoke in the crankcase breather hose. If the hose is smoky, check for a seized piston ring (Section 12).

Compression too low, hard starting or poor performance at low speed

- Incorrect valve adjustment

- Burned or bent valve

- Incorrect valve liming

- Broken valve spring

- Uneven valve seating

- Leaking or damaged head gasket

- Warped or cracked cylinder head

• Worn cylinder, piston or piston rings (section 12)

Compression too high, overheating or knocking

• Excessive carbon build-up on piston crown or on combustion chamber

Excessive noise

Incorrect valve adjustment

- Sticking valve or broken valve spring

- Damaged or worn camshaft

- Loose or worn cam chain

- Worn or damaged earn chain

- Worn or damaged cam chain tensioner

- Worn cam sprocket teeth

• Worn cylinder, piston or piston rings (section 12)

Rough idle

• Low cylinder compression

Excessive smoke

- Worn valve stem or valve guide

- Damaged stem seal

• Worn cylinder, piston or piston rings (section 12)

Was this article helpful?

0 0
DIY Battery Repair

DIY Battery Repair

You can now recondition your old batteries at home and bring them back to 100 percent of their working condition. This guide will enable you to revive All NiCd batteries regardless of brand and battery volt. It will give you the required information on how to re-energize and revive your NiCd batteries through the RVD process, charging method and charging guidelines.

Get My Free Ebook

Post a comment