Mitsubishi Eclipse 1990 Service Manual page 72

ENGINE
Caution
1.
2. If compression is measured with water, oil, fuel,
6. Set compression gauge to one of the spark plug holes.
7. Crank the engine with the throttle valve fully open and
measure the compression pressure.
Standard value (at engine speed of
Limit (at engine speed of
8. Measure the compression pressure for all the cylinders,
and check that the pressure differences of the cylinders
are below the limit.
Limit:. max. 100
9. If there' is a cylinder with compression or a compression
difference that is outside the limit, pour a small amount
of engine oil through the spark plug hole, and repeat
the operations in steps 7 and
(1) If the compression increases after oil is added, the
(2) If the compression does not rise after oil is added,
10. Connect the crankshaft position sensor
11. Install the spark plugs and spark plug cables.
12. Use the scan tool to erase the diagnostic
or disconnect the negative battery cable' for
10 seconds and reconnect it.
NOTE
This will erase the diagnostic trouble code
the crankshaft position sensor connector being discon-
nected.
TSB Revision
On-vehicle
Keep away from the spark plug hole when crank-
ing.
etc., that has come from cracks inside the cylinder,
these materials will become heated and will gush
out from the spark plug hole, which is dangerous.
1,250 (178 psi)
min. 935 (133 psi)
(14 psi)
cause of the malfunction is a worn or damaged piston
ring and/or cylinder inner
the cause is a burnt or defective valve seat,
is leaking from the gasket.
codes,
than
from