Compression, Check
Engine at operating temperature
(oil temperature ³ 80 °C/176 °F).
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Ignition cable cover from cylinder head cover, spark plug connectors with KM-717, spark plugs with KM-194-B.
Engines as of MY '93:
Disconnect spark plug connectors with KM-836 (1).
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Wiring harness plug (1) from trigger box or from dual spark ignition coil.
Disconnect fuel pump relay from relay base.
Note:
In C 20 XE, X 20 XEV and C 20 LET the fuel pump relay is in the front right footwell.
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Note:
Use compression recorder with rubber cone and range up to 1750 kPa (17.5 bar).
Actuate starter for approx. 4 seconds with throttle valve fully open - min. engine speed 300 rpm.
The pressure difference between the individual cylinders should not exceed 100 kPa (1 bar).
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Spark plugs with KM-194-B to cylinder head -
25 Nm/18 lbf. ft.
Connect spark plug connectors.
Ignition cable cover to cylinder head cover -
3 Nm/2 lbf. ft. 1)
1) C 20 XE - 8 Nm/6 lbf. ft.
Wiring harness plug to trigger box or to dual spark ignition coil.
Insert fuel pump relay in relay base.
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