excessive hot.
Ⅵ. THERE IS ABNORMAL NOISE WHEN ENGINE RUNNING
There is noise of
beating or piston
slap is heard
Piston or piston ring or cylinder is worn
Tie rod or piston pin and piston pin
hole is worn
Main bearing of crankshaft is worn
There is metal-beaten
noise in abnormal
combustion
Too much carbon deposit in
combusting chamber
Clear away carbon deposit
Too small electrodes clearance
of spark plug
Adjust electrodes
clearance properly
Engine is flooded with fuel
Check relative parts such as
carburetor
Engine is excessively hot
Readjust valve clearance properly
Fly wheel is not connected to crankshaft
Tightly