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IANDSJP
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COMPRESSION PRESSURE MEASUREMENT
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Compression pressure
(with oil applied in the cylinder)
Reading
Diagnosis
Higher than
Worn or damaged pistons
without oil
➔
Repair.
Same as
Possible defective ring(s),
without oil
valves, cylinder head gasket
or piston
➔
Repair.
Compression pressure (at sea level)
Standard:
1,422 kPa (14.22 kg/cm
2 ,
202 psi)
Minimum:
1,334 kPa (13.34 kg/cm
2 ,
190 psi)
Maximum:
1,500 kPa (15.00 kg/cm
2
,
213 psi)
**********************************
Measurement steps:
• With the throttle wide open crank the
•
•
•
engine until the reading on the compres-
•
sion gauge stabilizes.
3- 28
A
WARNING
To prevent sparking, ground all of the spark
plug leads before cranking the engine.
• Repeat th~ previous steps for the other
cylinders.
NOTE: - - - - - - - - - - - -
The difference in compression pressure
between the highest and lowest cylinder
compression readings should not exceed
100 kPa (1 kg/cm
2
,
14 psi).
**********************************
7.lnstall:
• Spark plugs
• Spark plug caps
Spark plug:
18 Nm (1.8 m • kg, 13 ft• lb)
•
•
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Troubleshooting
