When accelerating, there's a rather rorty noise, seemingly from the nearside front of the engine compartment (I have only heard this from inside the vehicle), as if of a blowing exhaust. The exhaust pipe is OK, however. Any ideas what it might be? It does not happen on the over-run.
{Subject header expanded to make less vague - DD}
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Jeez, I thought this was some new policy introduced in the German capital, just realised it is a Citroen, sorry cant help though.
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Exhaust/manifold or manifold/down pipe gasket blown ... or bolts/nuts ... loose or missing.
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manifold/down pipe gasket blown ... or bolts/nuts ... loose or missing.
I can't see anything at all wrong with the exhaust system, that's the problem!
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I had a brand new Berlingo hire car in Tenerife last year, 1.9 diesel. It too had a noise like this, so I popped the bonnet and couldnt see anything. Performed fine for the 2 weeks we had it, can't be certain but it could be a "characteristic'??
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and me, i no nowt about berlin ,so skipped this one but curiosity got the better of me,dont know the answer though
manifold opening under duress? maybe
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possibly a down pipe to manifold issue, these usually have a compressed steel o ring between the down pipe and the manifold, the engine movement under accleration may cause the gasket to blow however lifting the bonnet and reving it up will not reproduce the same effect as the engine rocking on take off/accelaration
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possibly a down pipe to manifold issue [snip] lifting the bonnet and reving it up will not reproduce the same effect as the engine rocking on take off/accelaration
Presumably there would be some evidence in the form of sooty products of combustion? There's nothing. It all seems gas-tight.
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It's probably the air filter housing vibrating. The Citroen mod was a couple of clips positioned to pull the housing halves together a bit harder.
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