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