DAELIM Roadwin R Service Manual - Troubleshooting

10-2

CYLINDER HEAD / VALVES

TOOLS

VALVE GUIDE REAMER

VALVE GUIDE DRIVER

VALVE SPRING COMPRESSOR

VALVE SEAT CUTTER

SEAT CUTTER  IN  20 (23mm)

EX 30 (20mm)

IN  45 (24.5mm)

EX 45 (24.5mm)

IN  70 (22mm)

EX 70 (22mm)

CUTTER HOLDER 5mm

TROUBLESHOOTING

Enging top-end problems useally 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 comperssion

Valves

- Incorrect valve adjustment (see section 3)

- Burned or bent valves

- Incorrect valve timing

- Broken valve spring

- Uneven valve seating

Cylinder head

- Leaking or damage head gasket

- Warped or cracked cylinder head 

Cylinder, piston (see section 10)

Excessive white 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  build-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