Hi Peter, I'm used to the way the engine sounds normally. You can hear it inside the car up until around 30mph then its masked by road noise. Its a definate ticking I guess, more than a knock which gets faster as the revs increase. Performance is unchanged and the turbo bit is working normally (no limp mode)

Hello! Just logged on and read your message tonight so not able to check tappets etc. I've had a fun afternoon taking the car to garages as the noise got worse. One said the noise was due to low oil levels (dipstick shows just under half between min and max lines). I doubt this theory don't you? But wandered into car parts place who agressively tried to sell me a litre of fully synthetic oil for £14. Blimey thats dear.

The other wants to have the car in for investigation, 1 hours to do that and another hour to fit a probable new cranskhaft pully, if thats what they find it is.

Meanwhile by the time I got home the noise had virtually disappeared so its hard to do anything with it now! Heres wondering if I'll only find out what it is when the car breaks down???? I'm not sure what to do now apart from take out breakdown cover quickly in case!

Edited by mw01908 on 18/11/2011 at 19:29

Don't rule out the bottom pulley. Mine was first changed at around 85,000 miles but then needed changing again a couple of years later. Regards.

Can't give good details because my son got the car off me and I was surprised when he told me that he had to have the bottom pulley replaced due to a knocking noise. Regards.

"HDI's are known to have ticky injectors."

Really? First I've heard of this.

However, the crankshaft pulley is a well-known issue and it does click when nearing failure. I've had experience of this and also of the problem disappearing when the car is warmed up, which can make it hard to diagnose. Tell-tale debris on the pulley itself will normally give the game away.

Edited by FP on 10/06/2012 at 13:21