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3) Engine does not develop full power
Check if the engine can be cranked by hand . If not , the cause may be as follows.
A.Crankshaft and bearing seized up Repair or change them
B.Piston sticking Repair or change piston cylinder liner
If the engine can be cranked freely , the causes may be as follows.
Cause Remedies
1.Oil not enough or broken off
Check if oil gallery is stopped up and if the oil in
crankcase is enough
2.Oil diluted or aged
Check if the oil has been diluted by the leakage
fuel from fuel pump plunger unit and if the oil is
aged. If so ,settle the problem
3.Sudden oil pump failure or oil
filter stopped up or relief valve/by-
pass valve went wrong
Repair or change oil pump ,Clean or change the
element
Cause Remedies
1.Engine overheated due to lack
of cooling water
Check regularly if the cooling water is enough
2.Cylinder overheated because of
water scale
Scour out the water jacket
3.Engine overloaded Follow the regulations of operation specified
4.Low tension of V-belt Adjust the tension or change the belt
Cause Remedies
1.Fuel consumed or fuel pipe crack Replace fuel or change the pipe
2.Fuel containing air Remove the air
3.Fuel filter or fuel pipe line
blocked up
Rinse the filter or the pipe
4.Plunger spring inside the injection
pump broken
Replace the spring with a new one
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