Mitsubishi S4Q2 User Manual

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Service Manual Mitsubishi SQ-Series diesel engines
Version 08/2004
CAUSES OF ENGINE PROBLEMS AND
REMEDIES
ENGLISH
TROUBLESHOOTING
(• Refer to the separate troubleshooting chart.)
Engine vibrates excessively Engine stalls Poor response for deceleration Engine does not pick up speeds Engine operates at high speeds and does not stop Engine rotates in reverse direction Fuel consumption is high Oil consumption is high Fuel mixes with oil Water mixes with oil Excessive blowby
Abnormality in
lubrication
system
Abnormal
coolant
temperature
Alternator
defective
Remedies
Indicator does not light when engine is not operating Indicator lights when engine operates at low speed Indicator lights when engine operates at high speed Overheating Low Indicator does not light when engine is not operating Indicator lights when engine operates at high speed
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__ __ __ __ __ __ ⊗ __ __ __ __ __ __ __ ⊗ __ __ __ (Adjust full-load setting of
governor.)
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Heat oil pan at starting. After
starting warm up engine
thoroughly.
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If bolts must be tightened,
replace gasket.
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Disassemble and replace
crankcase.
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Disassemble and repair.
Replace part(s) if necessary.
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Repair or replace.
__ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ Repair or replace.
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Repair or replace starter if
necessary.
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Repair or replace ring gear.
Replace pinion gear.
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Charge or replace battery. Heat
it if necessary.
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Replace part(s).
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Replace copper packing(s).
Replace glow plug(s), if
necessary.
__ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ ⊗ Replace alternator if necessary.
__ __ __ __ __ ⊗ __ __ __ __ __ __ __ __ __ __ ⊗⊗Adjust or replace.
__ __ __ __ __ __ __ __ __ __ __ ⊗ __ __ __ __ ⊗ __ Connect wires properly.

Mitsubishi S4Q2 Specifications

General

Brand	Mitsubishi
Model	S4Q2
Category	Engine
Language	English