Timing Marks
Timing marks show the correct alignment of crankshaft and camshafts.
What is Timing Marks?
They are found on pulleys, sprockets and covers. Many engines need locking tools instead. They are used when replacing belts or chains. Before removing a belt, many technicians add their own paint marks to make reassembly easier. Turning the engine by hand through two full revolutions after fitting and rechecking the marks confirms correct timing.
How it works
Aligning marks ensures valves open at the correct moment.
Why it matters for your car
Wrong timing can damage valves. Always follow the manufacturer's procedure.
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