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exhaust manifold , how would i know if it is cracked?
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Author:  honks [ Fri Oct 22, 2010 4:24 am ]
Post subject:  exhaust manifold , how would i know if it is cracked?

my 95 sierra is making a fairly loud tapping noise that appears to be coming from the exhaust manifol would this be a sign of the manifold being cracked i cannot see the manifold as the heat shield is still attatched and all the bolts are rusted up

Author:  skitzlux [ Sat Oct 23, 2010 6:53 am ]
Post subject:  Re: exhaust manifold , how would i know if it is cracked?

if its like a tapping or a ticking sort of noise it will more than likely be your manifold gasket blown out

Author:  Gwagensteve [ Sat Oct 23, 2010 6:57 am ]
Post subject:  Re: exhaust manifold , how would i know if it is cracked?

Or the wire mesh gasket that sits between the manifold and the downpipe. They can crack or get mashed up causing a leak. Pretty common.

I don't think sierra manifolds are prone to cracking to the point they audibly leak.

I know G16A Vitara manfolids are known to fall apart.

Steve.

Author:  royce [ Sat Oct 23, 2010 7:01 am ]
Post subject:  Re: exhaust manifold , how would i know if it is cracked?

get some redex engine treatment, follow the instructions about dribbling it down the carby, all leaks will stand out like dogs balls after that :)

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