Checking engine compression
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Checking engine compression
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1.
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Remove the upper engine cover.
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2.
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Undo the charge air pipe from the turbocharger and camshaft cover.
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3.
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Undo the rear cable mounting from the camshaft cover and disconnect the glow plugs.
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4.
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Blow clean around the glow plugs and remove them.
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5.
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Take out the fuse for the engine control module and fuel distribution pump (no. 27 in the dashboard fuse board).
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7.
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Run the starter motor until the gauge stops and engine speed is at least 150 rpm. The maximum permitted pressure differential between cylinders is 10%, see test values in
Engine block
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8.
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Disconnect the compression gauge and adapter. Fit the glow plugs.
Tightening torque: 10 Nm (7 lbf ft)
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9.
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Connect the glow plugs and fit the cable mountings to the camshaft cover.
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10.
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Fit the charge air pipe to the turbocharger and the camshaft cover.
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11.
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Fit the upper engine cover.
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12.
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Refit the fuse for the fuel distribution pump control module. Read and clear any DTCs.
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