Timing Chain Replacement in Vantaa

When the timing chain needs replacing

The timing chain transfers rotation from the crankshaft to the camshafts so the valves open and close at exactly the right moment relative to piston movement. The chain was originally meant to last the engine's entire life, but in practice — especially in VAG, BMW and Ford engines — it can start stretching as early as 100 000 km. A stretched chain throws the timing out, causing rough running, the engine warning light to come on and, in the worst case, the chain jumping a tooth — valves then strike the pistons and the engine is seriously damaged. The most common symptom is a metallic rattling noise on cold start, coming from the slack chain and its tensioner. The noise shortens or disappears once oil pressure builds and the tensioner receives oil. If a fault code points to a timing error (e.g. P0016, P0017), the chain must be replaced before the fault becomes irreversible.