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Home >> Volvo >> 2008 >> S40 T-5, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 42 (Engine - Inspection And Adjustment (644 Body)) >> Checking And Adjusting Components (B4204T2 CVVT; 2000) >> Cylinder leakage test >> General method description >> Check

General method description: Check

WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.

If a leak is detected that is assumed to come from the valve system, first check that the piston in the relevant cylinder is at top dead centre (TDC).

Then try to set the piston just prior to top dead centre (TDC) and redo the test.

When repeating the leak test on the same engine, there are usually variations in the results of the measurements.

This is due to changes in the engine coolant temperature (ECT) and the piston not reaching the same position as in the previous test, and is affected by the amount of oil on the piston rings at the time.

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