Starting Trouble; Check Items Before Troubleshooting; Problem: Starting Trouble - Mitsubishi L Series Service Manual

1.2 Starting trouble

1.2.1

Check items before troubleshooting

(1) Clogging of air cleaner element
(2) Coagulation of engine oil
(3) Use of poor quality fuel
(4) Drop in cranking speed
1.2.2

Problem: Starting trouble

Is the preheating
device normal?
YES
Is the electrical
wiring normal?
YES
Does fuel flow in
the fuel line?
YES
Is the engine correctly adjusted (fuel
injection timing and valve clearance)?
YES
Are fuel injection nozzles normal
(spray state and injection-valve opening
pressure)?
YES
Is the compression pressure
in cylinders normal?
YES
Inspect fuel injection pump
NO
Is power applied to the glow plug
wire immediately after the key
switch is turned ON?
YES
If the preheating device is equipped with a
fuel pump, does the pump operate when
the key switch is turned ON?
Is fuel drained when the air bleeding
NO
screw of the fuel injection pump is
loosened?
NO
NO
Inspect valves, pistons, piston rings
and cylinder head gasket
Problem: Starting trouble
NO
Inspect glow plug
NO
NO
Adjust engine
NO
Inspect fuel injection nozzles
TROUBLESHOOTING
Inspect key switch,
wiring and glow signal
Inspect wiring
of fuel pump
Inspect fuel filter, fuel
pipe and fuel tank
14-3