Engine Troubleshooting - Mitsubishi S3L Service Manual

OVERHAUL INSTRUCTIONS
Is heating system normal?
Yes
Are fuel lines free of restriction? (Is fuel pump operating properly when
starter switch in ON position?)
Are fuel injection timing and valve clearance correct?
Is fuel injection nozzle discharge pattern normal? Is injection pressure
Is compression pressure correct?
Yes
Fuel injection pump is faulty.
Service Manual Mitsubishi SL-Series diesel engines
Version 08/2004
Glow plugs are energized
No shortly after starter switch is
turned to ON.
Yes
Yes
correct?
Yes
ENGLISH
6.2

Engine troubleshooting

6.2.1 Problem 1: Hard starting
1. Items to be checked ahead of time
• Clogged air cleaner
• Wrong oil grade for weather conditions
• Poor quality fuel
• Low cranking speed
2. Inspection procedure
No
No
No
No
No
TROUBLESHOOTING
Check control timer unit.
Check fuel filter, fuel lines
and fuel tank.
Make adjustment to the
timing and clearance.
Make adjustment to the
nozzles.
Check valves, piston rings
and cylinder head gasket.
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