Engine Doesn't Start

SYMPTOM DESCRIPTION:

Engine won't start, requires excessive cranking time, or starts then dies immediately.




POSSIBLE CAUSE ACTION

Empty fuel tank or - Fill tank.
fuel tank vent blocked - Bleed fuel system.


- Check tank vent.



Improper fuel - Drain fuel tank, flush system,
and fill with proper fuel. Change
fuel filter.







Air in fuel system - Bleed fuel system.





Lack of voltage supplied - Check fuel solenoid circuit.
to the fuel solenoid




Fuel solenoid inoperative - Replace fuel solenoid.




Clogged fuel filter - Replace fuel filter.




Leaking, restricted, or damaged - Replace leaking or damaged
supply lines, or loose fuel lines or tighten connections as
connections needed. Bleed fuel system.





Wax buildup in fuel filter - Replace fuel filter, and
(cold weather only) verify that the proper fuel is
being used.




Incorrect injection pump to - Adjust injection pump timing.
engine timing




Air intake heating system - Check air intake heater relays.
malfunctioning

- Check air intake system
electrical circuit.




Fuel injection sequence - Check fuel injection lines
does not correspond with for proper routing.
firing order




Low or uneven engine - Repair as necessary.
compression





Restricted, blocked, or - Remove restriction or
leaking fuel injector lines replace lines as necessary.
Bleed fuel system.






Malfunctioning KSB valve/ - Check KSB valve function.
injection pump If KSB valve is found to be defective,
replace injection pump.

- If injection pump is malfunctioning
or will not adjust properly, replace as
a unit.