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Unusual pounding noise
Cause
Fuel delivery advance angle
is not correct
Air in the fuel system
Fuel delivery not balanced
Fuel quality bad
Parts fray over the limits
Oil pressure drop to zero or lacking pressure
Cause
Oil level is too low in the crankcase oil
tray
Oil passage leak oil
Oil filter, secondary filter and passage
jam
Oil pressure meter breaks or meter
and passage jam
Oil be too thinness
Oil pump gear is worn out and
clearance too large
Pressure regulating valve of oil filter
breaks
Crank
shaft,
camshaft
clearances too large.
Adjust the fuel delivery advance angle
Drains the air in the fuel system.
Adjust fuel delivery of every cylinder injection pump
Replace the qualified fuel
Exchange the parts
Add oil to the oil staff standard
Rule out oil leaking
Wash, replace the filter if necessary
Overhaul or replace
Replace the qualified oil
Adjust the clearance or replace the gear
Overhaul or adjust the regulate valve
bearing
Overhaul or replace
Remedy
Remedy
22
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