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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Exhuast leak.

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Old Mar 18, 2017 | 10:32 AM
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Exhuast leak.

I remember reading somewhere that Ford did not use gaskets on the exhast manifolds on the 5.0 in these trucks. Is this true? If so, why does Felpro sell them? I ask because i have a rather loud leak and its either the manifold, or the y pipe where it connects to the manifold. I got the gasket set from Felpro including the manifold gaskets, the donuts, and the flange gaskets. I want this fixed correctly. I do not want to have to do it again untill I install headers, if I install headers.
 

Last edited by rcaircraftnut; Mar 18, 2017 at 10:34 AM. Reason: Spelling
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Old Mar 18, 2017 | 12:45 PM
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I recently had new exhaust manifolds installed on my 95 5.0 due to exhaust leaks. The shop did not use gaskets. I asked the same question you did and several guys said no gasket needed.
 
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Old Mar 18, 2017 | 12:51 PM
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Have to make sure the manifold and block surfaces are absolutely flat.
 
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Old Mar 18, 2017 | 01:01 PM
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No gaskets is how they came brand new...everything new....once you take them off, you need to either mill the manifolds (and sometimes the heads) or use gaskets, as more often than not they will not seal for numerous reasons all of which can be caused by 20 years of normal use.

Gaskets are the easiest and most cost effective option when dealing with them at this point. Use the gaskets, and don't lose any sleep over it.
 
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Old Mar 18, 2017 | 04:29 PM
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Ok thanks guys.
 
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