Kia Cerato 2009 Service Manual page 5

Stuck valves. (Carbon on the valve stem or
valve seat may cause the valve to stay open.)
Lower engine noise, Low oil pressure.
regardless of engine
speed.
Loose or damaged flywheel.
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-bore clearance.
Excessive connecting rod bearing clearance.
Excessive crankshaft bearing clearance.
Incorrect piston, piston pin and connecting rod
installation.
Engine noise under Low oil pressure.
load.
Excessive connecting rod bearing clearance.
Excessive crankshaft bearing clearance.
Engine will not Hydraulically locked cylinder.
crank. (crankshaft
•• Coolant/antifreeze in cylinder.
will not rotate)
•• Oil in cylinder.
•• Fuel in cylinder.
Inspect the valves and valve guides,
then repair as required.
Repair or replace damaged
components as required.
Repair or replace the flywheel.
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 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.
•• The crankshaft journal.
Inspect the following components
and repair as required.
•• The crankshaft bearings.
•• The crankshaft journals.
Verify the piston pins and connecting
rods are installed correctly.
Repair as required.
Repair or replace as required.
Inspect the following components
and repair as required.
•• The connecting rod bearings.
•• The connecting rods.
•• The crankshaft.
Inspect the following components
and repair as required.
•• The crankshaft bearings.
•• The crankshaft journals.
•• The cylinder block crankshaft
bearing bore.
Remove injectors and check for fluid.
Inspect for broken head gasket.
Inspect for cracked engine block or
cylinder head.
Inspect for a sticking fuel injector
and/or leaking fuel regulator.