Cylinder/Piston Troubleshooting; Piston Sounds - Honda 2000 XR50R Service Manual

CVUNDER/PISTON
TROUBLESHOOTING
-If the performance is poor at low speeds, check for white smoke in the crankcase breather tube. If the tube is smoky. check
for a seized piston ring.
Cylinder compression is too low, or engine is hard to start
• Blown cylinder head gasket
• Worn, stuck or broken piston ring
• Worn or damaged cylinder or piston
Cylinder compression is too high, or engine overheats or
knocks
• Carbon depositas on the cylinder head and/or piston crown
8-2
Piston sounds
• Worn cylinder, piston and/or piston ring
• Worn piston pin hole and piston pin
• Worn connecting rod small end
Excessive smoke
• Worn, stuck or broken piston ring
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