Kia G6DB-3.3 Manual page 14

EMA -14
Symptom
Upper engine noise,regard-
less of engine speed.
Lower engine noise,regard-
less of engine speed.
www.CarGarage.ir
Suspect area
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.
Low oil pressure.
Loose or damaged drive plate.
Damaged oil pan, contacting the
oil pump screen.
Oil pump screen loose, damaged
or restricted.
Excessive piston-to-cylinder bore
clearance.
Excessive piston pin-to-piston
clearance.
Excessive connecting rod bearing
clearance
Excessive crankshaft bearing clearance. Inspect the following components,
Incorrect piston, piston pin and
connecting rod installation
www.CarGarage.ir
ENGINE MECHANICAL SYSTEM
Remedy
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.
Repair or required.
Repair or replace the drive plate.
• Inspect the oil pan.
• Inspect the oil pump screen.
• Repair or replace as required.
• Inspect the oil pump screen.
• Repair or replace as required.
• Inspect the piston, piston pin
and cylinder bore.
• Repair as required.
• Inspect the piston, piston pin and
the connecting rod.
• Repair or replace as required.
Inspect the following components
and repair as required.
• The connecting rod bearings.
• The connecting rods.
• The crankshaft pin journals.
and repair as required.
• The crankshaft bearings.
• The crankshaft main journals.
• The cylinder block.
• Verify the piston pins and connecting
rods are installed correctly.
• Repair as required.