Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Legacy 2000-2003 Approved Subaru Legacy 2000 2000 Service Manual ENGINE SECTION On Car Services MSA5TCD00L16105

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MSA5TCD00L16105


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2-2   [W4A0]                          SERVICE PROCEDURE
4. Engine Compression


4. Engine Compression
A: MEASUREMENT
CAUTION:
After warming-up, engine becomes very hot.
Be careful not to burn yourself during mea-
surement.
1) After warming-up the engine, turn ignition
switch to OFF.
2) Make sure that the battery is fully charged.
3) Release fuel pressure. 
4) Remove all the spark plugs. 
5) Fully open throttle valve.
6) Check the starter motor for satisfactory perfor-
mance and operation.
7) Hold the compression gauge tight against the
spark plug hole.
CAUTION:
When using a screw-in type compression
gauge, the screw (put into cylinder head spark
plug hole) should be less than 18 mm (0.71 in)
long.
8) Crank the engine by means of the starter motor,
and read the maximum value on the gauge when
the pointer is steady.




                                         B2M3133

9) Perform at least two measurements per
cylinder, and make sure that the values are correct.
Compression (350 rpm and fully open
throttle):
  Standard;
    1,216 kPa (12.4 kg/cm2, 176 psi)
  Limit;
    941 kPa (9.6 kg/cm2, 137 psi)
  Difference between cylinders;
    49 kPa (0.5 kg/cm2, 7 psi), or less




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