Mitsubishi Eclipse 1990 Service Manual page 177

TROUBLESHOOTING
Symptom
Compression too low
Oil pressure drop
pressure too high
valves
rod noise/
nain bearing noise
belt noise
engine rolling
vibration
ENGINE
Probable cause
Cylinder head gasket blown
Piston ring worn or damaged
Piston or cylinder worn
Valve seat worn or damaged
Engine oil level too low
Oil pressure switch faulty
Oil filter clogged
Oil pump gears or cover
Thin or diluted engine oil
Oil relief valve stuck (open)
Excessive bearing clearance
Oil relief valve stuck (closed)
Incorrect lash adjuster
Thin or diluted engine oil (low oil pressure)
Valve stem or valve guide worn or damaged
lnsuff oil supply
Low oil pressure
Thin or diluted engine oil
Excessive bearing clearance
Incorrect belt tension
Loose engine roll stopper (Front, Rear)
Loose transaxle mount bracket
Loose engine mount bracket
Loose center member
Broken transaxle mount insulator
Broken engine mount insulator
Broken roll stopper insulator
TSB Revision
Troubleshooting,
Remedy
Replace gasket
Replace rings
Repair or replace piston
block
Repair or replace valve
Check engine oil level
Replace oil pressure switch
Install new filter
Replace gears and/or cover
Change engine
Repair relief valve
Replace bearings
Repair relief valve
Bleed air or replace lash adjuster
Change engine oil
Replace valve
Check engine oil level
Refer pressure drop"
Change engine oil
Replace bearings
Adjust belt tension
belt
Retighten
Retighten
Retighten
Retighten
Replace
Replace
Replace
cylinder
seat ring
correct
guide
replace-timing