Compression, Check
Use compression recorder with a measuring range up to 1750 kPa (17.5 bar/253.75 psi).
Bring engine to operating temperature, oil temperature > 80 °C176 °F.
Remove cover from relay box.
Important:
| Remove fuel pump relay (relay with black base arrow in illustration) and wiring plug of terminal "15" from ignition coil. | |||
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| .P. D3097.tif | 9 | 7,5 | tiff;; |
Remove spark plug connector.
Remove spark plugs.
Press compression recorder with extension and rubber cone into spark plug bore hole.
Actuate starter approx. 4 times (minimum engine speed 300 rpm).
Pressure difference between the individual cylinders should not be more than 100 kPa (1 bar/14.5 psi).
Install spark plugs - 40 Nm/29.5 lbf. ft.
| Insert spark plug connection and route ignition cable free of tension. | .P. D7278.tif | 9 | 7,5 | tiff;; |
Connect fuel pump relay. Install cover from relay box.
| Connect wiring plug of terminal "15" to ignition coil. | |||
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| .P. D3097.tif | 9 | 7,5 | tiff;; |