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Checking the Timing of the Distribution

Model: Volkswagen Jetta A4, MK 4 - Years 1998-2005
Part: Engine

Since the timing belt synchronises the opening and closing of the valves and this engine is equipped with a pump-injector, its timing is absolutely crucial. For this operation, use a special jig that keeps the camshaft pulley perfectly in position during the belt replacement. Additionally, it is possible to check using specific diagnostic equipment the advance or retard of the ignition relative to the piston position and make corrections to the injection sequences to avoid so-called knocking.

Updated on 13 February 2026 by ScegliAuto

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