Car appreciation... the aesthetics, the engineering, etc

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lynx in reply to @owl

Is that the TSI? There seems to be an issue with the tensioner more than the chain. But you would think there would be some symptoms before.

How did the AA man diagnose the problem? Did he plug the car into any diagnostic equipment.

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owl in reply to @lynx

I now have a couple of responses from checkatrade for mobile mechanics who would attend. I assume I want the electrical diagnostics to flag any timing chain issues, but one person is offering a 'compression test' - will this help identify whether any damage caused from potential slipping/worn timing chain?

Any input greatly appreciated!

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TRA in reply to @owl

Not sure a compression test would tell you anything about the timing. Unless a valve has dropped an been smashed into the piston... But that would be very noisy and obvious when cranking.
Maybe a cam position sensor has gone and the car won't fire without a good signal from that.

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