Exhaust Leak under motor!

[stixx11]

I have an exhaust leak under the motor and I think it is probably a cracked manifold. Is this common and what is the best fix. {weld or new manifold}
Steven

 

[Speedy_91_SHO]

There is another topic asking the same exact thing, unless that was you. A couple people said thast a cracked manifold is unlikely. I had the same problem, and the studs of the gaskethad rusted and broken, very very loud.

 

[BlackMagik]

I had the same problem...stud broke and leaked...replaced it with a bold...big mistake because the bolt bottomed out and leaked even worse. Try removing the studs (eisier said than done) but if they do come out in one piece look for soot build up in the connection area between the Y-pipe and header, this is a good indicator that you have found the location of the leak. If the studs don't come out in one piece then you will need to center punch them and drill them out starting with a small bit and working your way up to a bit just big enough to get all of the stud and none of the threads, then follow up with a tap to clean out the threads. I used a dremmel with a snake for the smallest bits to keep them straight before moving up to the drill. good luck!

 

[Marccus]

T remove the studs:
1. Use Rost-Off by Wurth - the best stuff on the market to loosen frozen bolts, nuts, etc.

2. If you can't find Rost-Off, use PB Blaster.

3. Double (or triple!) nut the studs and turn on the lower nut with a wrench to remove the stud.

4. If you don't have access to double stud and get a wrench in there, Facom, Craftsman, Stahwille, Lisle, etc. all make stud removers each of which is made for a particular size stud, e.g. M8 stud remover etc.

The last option is the best to remove the studs.

 

[stixx11]

Thanks fella's I will do my best. I do not have access to a lift or some of the tools listed below. I will have to find some friends that may be able to help me. It so loud I can barely here the damn Flowmasters now!

 

[Marccus]

This would not be a good time to drive by hospitals with cardiac intensive care units, unless you want to set off a LOT of code blues!