COMPRESSION
Mechanical
2. Compression
S183081
A: INSPECTION
S183081A10
CAUTION:
After warming-up, engine becomes very hot. Be careful not to burn yourself during mea­surement.
1)  After warming-up the engine, turn ignition switch to OFF.
2)   Make sure that the battery is fully charged.
3)   Release fuel pressure. <Ref. to FU(DOHC TURBO)-50, RELEASING OF FUEL PRESSURE, OPERATION, Fuel.>
4)   Remove all the spark plugs. <Ref. to IG(DOHC TURBO)-4, REMOVAL, Spark Plug.>
5)   Fully open throttle valve.
6)  Check the starter motor for satisfactory perfor­mance 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.
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9) Perform at least two measurements per cylinder, and make sure that the values are correct.
Compression (350 rpm and fully open throttle): Standard;
981 — 1,177 kPa (10.0 — 12.0 kg/cm2, 142 — 171 psi) Limit;
981 kPa (10.0 kg/cm2, 142 psi) Difference between cylinders; 49 kPa (0.5 kg/cm2, 7 psi)
ME(DOHC TURBO)-22