Compression, Checking

WARNING: This page is about a different car, the 2023 Volkswagen Arteon. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Compression Tester Kit - Adapter:V.A.G 1763/13
Compression Tester Kit:V.A.G 1763

Requirement

Engine oil temperature must be at least 30 °C (86 °F).
The battery voltage must be at least 12.7 V.

-- Remove the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .

-- Disconnect the fuel injector connector -arrow-.

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-- Remove the spark plugs. Refer to Spark Plugs, Replacing.

-- Insert the Compression Tester Kit - Adapter:V.A.G 1763/13 -A- into the spark plug hole and connect the Compression Tester Kit:V.A.G 1763 -B-.

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-- Check the compression with the compression tester -B- according to the operating instructions.

Requirement

The help of a second technician is necessary for the following procedure.

-- Start the engine and press the accelerator pedal all the way, until no increase in pressure on the compression tester -B- is displayed.

-- Repeat the procedure on each cylinder.

Compression values. Refer to Check and Adjustment Values .

If the Test with the Compression Tester Kit:V.A.G 1763 Does Not Lead to a Clear Result there are Two Additional Tests.

-- Perform the loss of pressure test using the Pressure-Loss Tester:VAS 522 001 according to the operating instructions.

-- Check the CO2 content using the CO2 Coolant Tester:VAS 531 009 according to the operating instructions.

Continuation

-- Check and clear the DTC memory using the Vehicle Diagnostic Tester .