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Old 3rd September 2016, 18:10   #1
75Tom
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Default CDTi loud metallic noise when idling:

I'm not having much luck with the silver surfer currently! It has suddenly today developed a loud metallic rattling noise on idle.

The noise goes away as revs increase, and there is no loss of power or any other change that I can detect.

Any ideas chaps? Is this consistent with one or more engine mounts failing?


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Old 3rd September 2016, 18:26   #2
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Could be your crank pulley - does the noise seem to come from near the offside end of the engine ?

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Old 3rd September 2016, 18:31   #3
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Something like that ?

https://www.youtube.com/watch?v=TPlLav4ulp8

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Old 3rd September 2016, 19:50   #4
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Hmm, not a million miles away but more metallic sounding somehow. Also on this video the sound seems to take a few seconds to kick in - mine is straight away from start.

PS should have said I had my pulley and all belts done two months ago, so not that I think.


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Old 3rd September 2016, 19:52   #5
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Tom- do you know what make of pulley was fitted ? - anything other than the genuine Corteco item can fail quite quickly.

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Old 3rd September 2016, 20:18   #6
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No it's not a Corteco, unfortunately. It's by a French manufacturer from memory - I will have a look on the invoice. I have done less than 2k miles though since it was changed, can non-genuine ones really fail that quickly? Annoying if so but I shall be straight back to the garage!


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Old 3rd September 2016, 20:21   #7
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Sounds a bit like the noise in this video: https://youtu.be/PvCqpPXhqSs


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Old 3rd September 2016, 22:17   #8
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Might be worth checking the center exhaust heat-shield for being loose. My tourer developed a loud rattle at idle but was OK when moving - all four mounting points had failed - some penny washers and new bolts and all was quiet again.
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Old 3rd September 2016, 22:41   #9
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Quote:
Originally Posted by 75Tom View Post
No it's not a Corteco, unfortunately. It's by a French manufacturer from memory - I will have a look on the invoice. I have done less than 2k miles though since it was changed, can non-genuine ones really fail that quickly?
Some don't even last that long.

Also worth checking the water pump pulley for play, as that can make a similar noise when it is on the way out.
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Old 4th September 2016, 10:39   #10
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Lack of funds and needing one quick I had one of these fitted last October and it's still going strong...although to be honest I've only done a few thousand miles since.

Comes with a two year 20k warranty anyway so if (or when) it does fail I'll replace it with a genuine Corteco one.

https://www.ebay.co.uk/itm/321209234685

EDIT: If you do need one and go for it they don't come with a new stretch bolt so you will need to get one. I got one from Rimmers.
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