Topic: How to tell if exhaust manifold gasket is leaking? (Read 833 times)

kcl · « **on:** 17 March 2009, 11:29:18 »

I have a knocking noise coming from the engine, a few times it has been louder when cold and reduced after 10-30 sec or something... Even when warm, there's a slight rattle from the engine.

It could be a sticky lifter, but how can I be sure it's not the exhaust manifold gasket? Seems to be on the left side of engine (drivers side in UK). Power and MPG ok, no EML, just the knocking noise.

nick v6 · « **Reply #1 on:** 17 March 2009, 11:35:57 »

best way to test the exhaust mainfold for leak
is to block the exhaust up while its running

or put a long screw driver onto the manifold and put it to your ear
yes it does work you can here everything

other way it water or wd40 on the part where you think it leaking

there is a way with a smoke bomb
putting it in the exhaust and blocking the exhaust off and waiting for the smoke to fill the exhaust

hope thats of any help mate

kcl · « **Reply #2 on:** 17 March 2009, 11:52:03 »

Thanks for your quick answer, will try to block the exhaust and find out if it smokes... Hoping for the best...it's a lifter, expecting the worst...it's the gasket...

nick v6 · « **Reply #3 on:** 17 March 2009, 11:53:39 »

good luck mate let me know how you get on

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Author Topic: How to tell if exhaust manifold gasket is leaking? (Read 833 times)

kcl

How to tell if exhaust manifold gasket is leaking?

nick v6

Re: How to tell if exhaust manifold gasket is leaking?

kcl

Re: How to tell if exhaust manifold gasket is leaking?

nick v6

Re: How to tell if exhaust manifold gasket is leaking?