Low Output; Check Items Before Troublshooting; Problem: Low Output - Mitsubishi L Series Service Manual

TROUBLESHOOTING

1.7 Low output

1.7.1

Check items before troublshooting

(1) Seizure of engine moving parts
(2) Viscosity of engine oil too high
(3) Use of poor quality fuel
(4) Clogging of air cleaner element
(5) Clogging of muffler
(6) Powertrain malfunction
1.7.2

Problem: Low output

Is fuel in the fuel line sufficient?
YES
Is the engine correctly adjusted
(valve clearance and fuel injection timing)?
YES
Are fuel injection nozzles normal
(spray state and injection-valve
opening pressure)?
YES
Is the compression
pressure normal?
YES
Inspect fuel injection pump
14-8
Does fuel including the fuel amount
in the fuel tank flow sufficiently in
the drop type?
Does fuel flow with the switch turned
ON in the electromagnetic type?
YES
NO
NO
Inspect valves, cylinder head gasket, pistons and piston rings
Problem: Low output
Fuel pump
Adjust engine
NO
Inspect fuel injection nozzles
NO
Inspect fuel filter,
fuel pipe and fuel tank