GENERAL EMA -13
TROUBLESHOOTING EB9DDED 8
Symptom Suspect area
Remedy
Worn crankshaft bear ings.
Loose or improperly installed
engine drive plate.
Replace the crankshaft and bearings
as required.
Repair or replace the drive plate
as required.
Worn piston rings.
(Oil consumption may or may not
cause the engine to misfire.)
Inspect the cylinder for a loss of
compression.
Repair or replace as required.
Engine misfire with abnormal
internal lower engine noises.
Worn crankshaft thrust bearings
Replace the crankshaft and bearings
as required.
Stuck valves.
(Carbon buildup on the valve stem)
Repair or replace as required.
Excessive worn or mis-a lig ned
timing chain.
Replace the timing chain and sprocket
as required.
Engine misfire with abnormal
valve train noise.
Worn camshaft lobes. Replace the camshaft and valve lifters.
Engine misfire with coolant
consumption.
• Faulty cylinder head gasket and/or
cranking or other damage to
the cylinder head and engine
block cooling system.
• Coolant consumption may or may
not cause the engine to overheat.
• Inspect the c ylinder h ead and engine
block for damage to the coolant
passages and/or a faulty head gasket.
• Repair or replace as required.
Worn valves, guides and/or valve
stem oil seals.
Repair or replace as required.Engine misfire with excessive
oil consumption.
Worn piston rings.
(Oil consumption may or may not
cause the engine to misfire)
• Inspect the cylinder for a loss
of compression.
• Repair or replace as required.
Incorrect oil viscosity. • Drain the oil.
• Install the correct vis cosity oil.
Engine noise on star t-up, but
only lasting a few seconds.
Worn crankshaft thrust bearing. • Inspect the thrust bearing and
crankshaft.
• Repair or replace as required.
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