Symptom | Probable cause | Remedy |
Low compression | Blown cylinder head gasket | Replace gasket |
Worn or damaged piston rings | Replace rings | |
Worn piston or cylinder | Repair or replace the piston and/or cylinder block | |
Worn or damaged valve seat | Repair or replace the valve and/or seat ring | |
Low oil pressure | Low engine oil level | Check engine oil level |
Faulty oil pressure switch | Replace | |
Clogged oil filter | Replace | |
Worn oil pump gears or cover | Replace | |
Thin or diluted engine oil | Change and find out cause | |
Oil relief valve stuck (open) | Repair | |
Excessive bearing clearance | Replace | |
High oil pressure | Oil relief valve stuck (closed) | Repair |
Excessive engine vibration | Loose engine roll stopper (front, rear) | Retighten |
Loose transaxle mount bracket | Retighten | |
Loose engine mount bracket | Retighten | |
Loose center member | Retighten | |
Broken transaxle mount insulator | Replace | |
Broken engine mount insulator | Replace | |
Broken engine roll stopper insulator | Replace | |
Noisy valves | Thin or diluted engine oil (Low oil pressure) | Change |
Worn or damaged valve stem or valve guide | Replace | |
Connecting rod and main bearing noise | Insufficient oil supply | Check engine oil level |
Thin or diluted engine oil | Change and find out cause | |
Excessive bearing clearance | Replace | |
Timing belt noise | Incorrect belt tension | Adjust belt tension |
Low coolant level | Leakage of coolant | |
1. Heater or radiator hose | Repair or replace parts | |
2. Faulty radiator cap | Tighten or replace clamps | |
3. Thermostat housing | Replace the gasket or housing | |
4. Radiator | Repair or replace | |
5. Engine coolant pump | Replace parts | |
Clogged radiator | Foreign material in coolant | Replace coolant |
Abnormally high coolant temperature | Faulty thermostat | Replace parts |
Faulty radiator cap | Replace parts | |
Restricted flow in cooling system | Clear restriction or replace parts | |
Loose or missing drive belt | Adjust or replace | |
Faulty water pump | Replace | |
Faulty temperature sensor or wiring | Repair or replace | |
Faulty electric fan | Repair or replace | |
Insufficient coolant | Refill coolant | |
Abnormally low coolant temperature | Faulty thermostat | Replace |
Faulty temperature sensor or wiring | Replace or repair | |
Leakage from oil cooling system | Loose connections | Replace |
Cracked or damaged ; hoses, pipes or oil cooler | Replace or repair | |
Inoperative electrical cooling fan | Damaged : Thermo sensor, Electrical motor, Radiator fan relay, Wiring | Replace or repair |
Exhaust gas leakage | Loose connections | Retighten |
Broken pipe or muffler | Repair or replace | |
Abnormal noise | Detached baffle plate in muffler | Replace |
Broken rubber hanger | Replace | |
Pipe or muffler contacting vehicle body | Correct | |
Broken pipe or muffler | Repair or replace |