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  #1  
Old 12-19-2009, 03:34 AM
davethewave davethewave is offline
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Default Exhaust manifold leak, need help

i have a '93 4x4 3.0. i bought this truck a month ago and the engine is still strong. my mechanic tells me he has never seen a truck with this many miles on it in this good of shape. i love this truck.

however, there is one thing that bugs the hell out of me. the truck makes a ticking noise when under partial or wide open throttle. this ticking noise is not present when it is raining outside.

ford didnt put a gasket between the head and the exhaust manifold. there is a very minute leak of exhaust gas coming from the passenger side where these two pieces meet up.

i would love to just remove the manifold and install a gasket but im afraid that the bolts are too weak and may be too rusted to safely remove. i dont want to end up with a broken stud in the head that would require expensive drilling and tapping.

as an alternative, i was thinking today that there might be a sealer or sorts out there. something like a liquid gasket sealer or something that im not familiar with. maybe somebody could give me some advice.
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Old 12-19-2009, 08:36 AM
STL STL is offline
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I would soak the bolts in PB blaster drive the truck around for 30 minutes, and get them warm. should help in them coming out without breaking.
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Old 12-05-2011, 01:07 PM
fordboy305 fordboy305 is offline
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Default Re: Exhaust manifold leak, need help

go to a muffler shop and tell them to loose em up and put em back on then your job would be easyer or just have the shop do it cant be that expensive?
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Old 12-06-2011, 08:33 AM
Badmotorfinger1 Badmotorfinger1 is offline
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Default Re: Exhaust manifold leak, need help

Quote:
Originally Posted by fordboy305 View Post
go to a muffler shop and tell them to loose em up and put em back on then your job would be easyer or just have the shop do it cant be that expensive?
This is probably your best option.
If you're going to do it yourself, use PB Blaster (as STL said) and get a 1/2" ratchet with a pretty long handle. The extra leverage is nice. Keep squirting the PB Blaster as you remove the bolts.
Get some high temp liquid gasket from any auto parts place, clean the mating surfaces, apply the gasket, and reinstall.
If you think you might be removing the bolts again, put a liberal amount of anti-seize on the threads before reinstalling them.
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Old 02-27-2012, 01:58 AM
ChrisHanson1993 ChrisHanson1993 is offline
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Default Re: Exhaust manifold leak, need help

do they make liquid gaskets that are made to stand up to that much heat. my buddy who runs an auto shop and i were talking about my 89 2.9 V6 and i asked him about something similar to what your asking and he said those type of gasket formers werent meant to be used on the manifold since it can reach temperatures around 1200 deg. idk if what he said is true or not but if i were you i would just go buy a manifold gasket
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Old 03-07-2012, 05:36 AM
cummins123 cummins123 is offline
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Default Re: Exhaust manifold leak, need help

I'm in the process of replacing my factory exhaust manifolds. Figured since the trans was out and I had to cut the exhaust I would go ahead and install a pair or headman headers. The header replacement has been a big pain. The passenger side is done with only one bolt that I had to drill and tap. The drivers side is another story. So far I'm in the process of drilling and taping 2 broken bolts and 2 other bolts are still stuck in the head. I'm at the point that I may go ahead and drill the bolts out oversized and install bolts with nuts since there is room.
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