Hyundai GENESIS COUPE BK 2010 Manual page 36

Engine misfire with abnormal valve
train noise.
Engine misfire with coolant
consumption.
Engine misfire with excessive oil
consumption.
Engine noise on start-up, but only
lasting a few seconds.
Upper engine noise,regardless of
engine speed.
Worn piston rings.
(Oil consumption may or may not
cause the engine to misfire.)
Worn crankshaft thrust bearings
Stuck valves.
(Carbon buildup on the valve stem)
Excessive worn or mis-aligned timing
chain.
Worn camshaft lobes.
• 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.
Worn valves, guides and/or valve
stem oil seals.
Worn piston rings.
(Oil consumption may or may not
cause the engine to misfire)
Incorrect oil viscosity.
Worn crankshaft thrust bearing.
Low oil pressure.
Broken valve spring.
Worn or dirty valve lifters.
Stretched or broken timing chain
and/or damaged sprocket teeth.
Worn timing chain tensioner, if
applicable.
Worn camshaft lobes.
Worn valve guides or valve stems.
Stuck valves. Carbon on the valve
stem or valve seat may cause the
valve to stay open.
Worn drive belt, idler, tensioner and
bearing.
required.
Inspect the cylinder for a loss of
compression.
Repair or replace as required.
Replace the crankshaft and bearings
as required.
Repair or replace as required.
Replace the timing chain and sprocket
as required.
Replace the camshaft and valve lifters.
• Inspect the cylinder head and
engine block for damage to the
coolant passages and/or a faulty
head gasket.
• Repair or replace as required.
Repair or replace as required.
• Inspect the cylinder for a loss of
compression.
• Repair or replace as required.
• Drain the oil.•Install the correct
viscosity oil.
• Inspect the thrust bearing and
crankshaft.
• Repair or replace as required.
Repair or replace as required.
Replace the valve spring.
Replace the valve lifters.
Replace the timing chain and
sprockets.
Replace the timing chain tensioner as
required.
• Inspect the camshaft lobes.
• Replace the timing camshaft and
valve lifters as required.
Inspect the valves and valve guides,
then repair as required.
Inspect the valves and valve guides,
then repair as required.
Replace as required.