1.2 TSI timing chain tensioner wear
SeriousEngineThe 86 and 105PS 1.2 TSI (EA111) that arrived with the 2010 facelift uses a small simplex chain driven by an hydraulic tensioner that wears and lets the chain stretch. Fault File puts typical onset at 60,000-80,000 miles on cars that ran the long service intervals, with a metallic rattle on cold start that fades after a few seconds; owner forums report the chain being noisy for months before skipping a tooth, which bends valves and destroys the engine. A chain, tensioner and guide job is a fair used-car invoice, but a jumped chain on a cheap Roomster is effectively a write-off.
Metallic rattle for the first few seconds on a cold start, Rattle returning when the engine is hot after a junction stop, Misfire, engine warning light or sudden loss of power if the chain jumps
- Ask for a genuinely stone-cold start with the bonnet open - dealers warm cars before you arrive
- Demand receipts for chain and tensioner replacement or shortened oil-change intervals
- Treat any seller shrugging off a start-up rattle as normal as a hard walk-away