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Metallic Rattle on low RPM lift off - but maybe not heat shields..

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Old 06 January 2018, 06:33 PM
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Bazil_SW
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Default Metallic Rattle on low RPM lift off - but maybe not heat shields..

Hi all. Yesterday my car started making a metallic rattling noise on low rpm lift off, video attached at the link: Video

My inital thought was a heat shield but I've got a full decat and harvey trick up pipe neither of which have heat shields. The only ones are the ones on the turbo and the stock manifold, which I've checked and they seem ok.

Any other suggestions?

Cheers!
Old 07 January 2018, 01:43 PM
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daz1968
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My car had similar and it was one of the cambelt idler bearings starting to break up, maybe worth checking these along with alternator and power steering pump and the belt tensioner,
Old 07 January 2018, 06:04 PM
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Bazil_SW
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Cheers for the reply, the sound is definitely coming from underneath and centre of the car rather than the front.

I spent a bit more time investigating today and found 2 tiny leaks on the conical exhaust gasket between the downpipe and centre section. Not sure why this would make such a metallic noise like that, but I expect that's the cause. New gasket to be ordered and fitted and see what happens!
Old 07 January 2018, 06:18 PM
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alcazar
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Mine did similar and it was the crankshaft pulley rubber anti-vibration part breaking up. Also manifested as a ticking at idle.
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