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What's with the attitude in replies 1 and 2??? Why bother replying with all that crystal ball nonsense?
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The auxiliary belts on these make a real din if the sprag clutch on the alternator siezes. Try running it with the belt off.
Mine had the noisy aux belt at idle issue though the dealer advised that there was a modified tensioner and roller, fitted FOC with a new belt at around 90,000 miles and 3.5 years old, one advantage of full dealer history.
I notice it again now some times when first started from cold though fine when warm, now 130,000.
To the OP, how many miles has you car done? Perhaps call in to a Ford dealer and ask for a technician to listen to it idle.
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aux belt pullys are well known for there rumbeling
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Peter,
Can you upload a recording of the car on tickover and put it on YouTube or somewhere - may help.
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The best I can say, is it can sound like an old diesel, say an FX 3 taxi. I've just accepted it a typical diesel but having listened to a few 2.0 TDCi's in other cars it does sound chattery.
An RAC man thinks it may be a blocked or carboned up injector so that will be first port of call.
I do not think there are any internal mechanical faults as I've had dodgy big/little ends and othe horrendous rattles in other cars from the past. Oil consumption is non-existent and the car runs like the wind when on the M4. An average of 51mpg.
Any other thoughts much appreciated.
The aux belt and tensioner were changed at 50K by the vendor.
Thank you.
Peter
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Perhaps try a good run on Shell V-Power or BP Ultimate, that should clean though a bit.
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Or Millers Power sport additive
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