Xinchai 490B Series Manual page 40

6.1 Engine fails to start
Cause of trouble
Fault in charging generator
Fault in starting motor
Air trapped in fuel system
Fuel filter blocked
Fault in delivery pump
Fault in injector
Valve clearance is too small
Gas leak through cylinder
head gasket
Fault in piston ring
Low temperature and too
high oil viscosity
Faults in injection timing
Contact with Xinchai service
station
36
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Remedies
Charge or replace the generator
Check and fasten connections
Check fuel piping and release trapped air with
hand delivery pump
Clean or replace fuel filter
Check fuel supply pipe and repair delivery pump
Dismantle the injector and adjust it on test stand
Adjust and lap the valve
Replace the gasket and fasten bolts
Renew, clean and adjust
Pre-warm the engine and use specified oil
Check and adjust