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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Disconnect the charge air pipe from the turbocharger and camshaft cover.
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3.
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Disconnect the rear cable mounting from the camshaft cover and unplug the connectors from the glow plugs.
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4.
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Blow clean the area around the glow plugs and remove them.
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5.
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Remove the fuse for the engine control module and fuel distribution pump (no. 2 in the fuse box to the left of the battery box).
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7.
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Run the starter motor at a minimum of 150 rpm until the gauge reading stops rising. The maximum permitted difference between cylinders is 10%. Refer to the control values under
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 wiring mounting to the camshaft cover.
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10.
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Fit the charge air pipe to the turbocharger and 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. Check and erase any DTCs.
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