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Ⅲ. GASOLINE ENGINE GANNOT RUN SMOOTHLY
TROUBLE
Engine is pinking
Abnormal
combustion
Engine cannot start
because
of
spark
lacking
CAUSE
Piston, cylinder or piston ring is worn
excessively.
Piston pin and piston pin hole are worn
excessively.
Tie rod small head is worn excessively.
Roller bearing for crankshaft main shaft
is worn.
Engine is too hot
Too much carbon deposit in combustion
chamber
Improper gasoline brand or low gasoline
quality
There is water in float chamber
Improper spark plug electrodes clearance
Replace the worn
Replace piston or piston pin
Replace tie rod
Replace roller bearing
Shoot trouble
Clear away
Replace with qualified gasoline
Clean
Adjust
39
REMEDY
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