Kia Optima: Troubleshooting - General Information - Engine Mechanical System - Kia Optima TF 2011-2018 Service ManualKia Optima: Troubleshooting

 

Symption
Suspect area
Remedy
Engine misfire with abnormal internal lower engine noises.
Worn crankshaft bearings
Loose or out of specification engine flywheel
Replace the crankshaft and bearings as required.
Repair or replace the flywheel 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.
Worn crankshaft thrust bearings
Replace the crankshaft and bearings as required
Engine misfire with abnormal valve train noise.
Stuck valves.
(Carbon buidup on the valve stem)
Repair or replace as required
Excessive worn or mis-aligned timing chain
Out of specification valve clearances
Replace the timing chain and sprocket as required.
Worn camshaft lobes.
Replace the camshaft and valve lifters.
Engine misfire with coolant consumption
Faulty cylinder head gasket 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 cylinder head and engine block for damage to the coolant passages and/or a faulty head gasket.
Repair or replace as required.
Engine misfire with excessive oil consumption
Worn valves, guides and/or valve stem oil seals.
Repair or replace 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 noise on start-up, but only lasting a few seconds.
(Check and compare with known good vehicle to determine normal condition.)
Incorrect oil viscosity
Drain the oil.
Install the correct viscosity oil.
Worn crankshaft thrust bearing.
Inspect the thrust bearing and crankshaft.
Repair or replace as required.
Upper engine noise, regardless of engine speed.
Low oil pressure
Repair or replace as required.
Broken valve spring.
Replace the valve spring.
Worn or dirty valve lifters.
Replace the valve lifters.
Stetched or broken timing chain and/or damaged sprocket teeth.
Replace the timing chain and sprockets.
Worn timing chain tensioner, if applicable.
Replace the timing chain tensioner as required.
Worn camshaft lobes.
Inspect the camshaft lobes.
Replace the timing camshaft and valve lifters as required.
Out of specification valve clearances
Worn valve guides or valve stems.
Inspect the valves and valve guides, then repair or replace as required.
Stuck valves. (Carbon on the valve stem or valve seat may cause the valve to stay open.
Inspect the valves and valve guides, then repair or replace as required.
Worn drive belt, idler, tensioner and bearing.
Replace as required
Lower engine noise, regardless of engine speed
Low oil pressure
Repair or required.
Loose or damaged flywheel.
Repair or replace the flywheel.
Damaged oil pan, contacting the oil pump screen.
Inspect the oil pan.
Inspect the oil pump screen.
Repair or replace as required.
Oil pump screen loose, damaged or restricted.
Inspect the oil pump screen.
Repair or replace as required.
Excessive piston-to-cylinder bore clearance.
Inspect the piston, piston pin and cylinder bore.
Repair or replace as required.
Excessive piston pin-to-piston clearance
Inspect the piston, piston pin and the connecting rod.
Repair or replace as required.
Excessive connecting rod bearing clearance
Inspect the following components and repair or replace as required.
The connecting rod bearings.
The connecting rods.
The crankshaft pin journals.
Excessive crankshaft bearing clearance
Inspect the following components, and repair or replace as required.
The crankshaft bearings.
The crankshaft main journals.
The cylinder block
Incorrect piston, piston pin and connecting rod installation
Verify the piston pins and connecting rods are installed correctly.
Repair as required.
Engine noise under load
Low oil pressure
Repair or replace as required.
Excessive connecting rod bearing clearance
Inspect the following components and repair or replace as required :
The connecting rod bearings.
The connecting rods.
The crankshaft
Excessive crankshaft bearing clearance
Inspect the following components, and repair or replace as required.
The crankshaft bearings.
The crankshaft main journals.
The cylinder block.
Engine will not crank-crankshaft will not rotate
Hydraulically locked cylinder
Coolant/antifreeze in cylinder.
Oil in cylinder.
Fuel in cylinder
1. Remove spark plugs and check for fluid.
2. Inspect for broken head gasket.
3. Inspect for cracked engine block or cylinder head.
4. Inspect for a sticking fuel injector and/or leaking fuel regulator.
Broken timing chain and/or timing chain and/or timing chain gears.
1. Inspect timing chain and gears.
2. Repair as required.
Material in cylinder
Broken valve
Piston material
Foreign material
1. Inspect cylinder for damaged components and/or foreign materials.
2. Repair or replace as required.
Seized crankshaft or connecting rod bearings.
1. Inspect crankshaft and connecting rod bearing.
2. Repair as required.
Bent or broken connecting rod.
1. Inspect connecing rods.
2. Repair as required.
Broken crankshaft
1. Inspect crankshaft.
2. Repair as required.

Repair procedures
If the there is lack of power, excessive oil consumption or poor fuel economy, measure the compression pressure. 1. W ...

Special Service Tools
  Tool (Number and name) Illustration Use Crankshaft front oil seal installer (09214-3K000) (09231-H1100) Install ...

See also:

Components and Components Location
Components Location 1. Drive shaft 2. Lower arm 3. Front disk 4. Front strut assembly 5. Steering gearbox 6. Front stabilizer bar 7. Sub frame ...

Overhead Console Lamp. Schematic Diagrams
Circuit Diagram ...

Installation
1. Remove the ignition key from the vehicle. 2. Disconnect the battery negative cable from battery and wait for at least three minutes before beginning work. ...

Copyright www.kiopman.com 2018