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Cause
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Procedure
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Low oil pressure
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2.
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Repair or replace damaged parts if necessary.
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Worn power take-off components - e.g. severe cracks, dents or missing pieces on the drive belt, and/or displaced system parts.
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1.
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Check the drive system
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2.
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Repair or replace if necessary.
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Crankshaft balance weight, loose or damaged
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1.
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Check the crankshaft's balance weight.
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2.
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Repair or replace if necessary.
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Ignition knock
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Check that the ignition system is working correctly. See "Symptoms - Engine management".
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Undo the torque converter's screws
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1.
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Check the torque converter's screws and the flywheel.
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2.
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Repair or replace if necessary.
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Flywheel loose or damaged
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Repair or replace the flywheel
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Damaged oil pan, moving against oil pump screen
A damaged oil pan may hold the oil pump's screen in an incorrect position, preventing a correct flow to the oil pump.
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3.
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Repair or replace if necessary.
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Oil pump screen loose, damaged or constricted.
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2.
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Repair or replace if necessary.
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Too much clearance between piston and cylinder hole
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1.
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Check piston and cylinder bore.
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Too much clearance between gudgeon pin and cylinder bore.
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1.
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Check piston, gudgeon pin and connecting rod.
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2.
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Repair or replace if necessary.
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Clutch rod bearing clearance too large
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Check the following components and repair if necessary:
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Crankshaft bearing clearance too large
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Check the following components and repair if necessary:
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Incorrect fitting of piston, gudgeon pin and connecting rod.
Pistons must be fitted with the marking, or depression, on top of the piston, facing the front of engine. Gudgeon pins must be centred in the connecting rod's bolt holes.
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1.
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Check that pistons, gudgeon pins and connecting rods are fitted correctly.
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