Isuzu A-4BG1T - Page 173

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TROUBLESHOOTING 12-5
HARD STARTING
4) ENGINE TURNS OVER BUT DOES NOT START
Checkpoint
Trouble Cause
Remedy
t
Engine stop mechanism
NG Defective engine stop mechanism NG
Replace the engine stop
1
I Control wire improperly adjusted 1
8 mechanism
(In-line pump)
Adjust the control wire
L
1
Defective fuel cut solenoid valve
WE pump)
NG Replace the fuel cut solenoid
valve
FUEL IS NOT BEING DELIVERED TO THE INJECTION PUMP
4
1
t
.
Fuet
NG
Fuel tan& is empty
NG
Fill the fuel tank
.OK
t
NG
Clogged or damaged fuel lines
Loose fuel line connections
NG
Repair or replace the fuel lines
Retighten the fuel line
connections
OK
I 1 I
Fuel filter
NG
t--l
Fuel fitter overflow valve does
not close
Repair or replace the fuel filter
overflow valve
NG
i
Clogged fuei filter element
NG Replace the fuel filter element or
the fuel filter cartridge
a
OK
t 4
Fuel system
NG
Air in the fuel system
NG
Bleed the air from the fuel system
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