I have a 2021 ram 1500 5.7 e torque. I kept hearing an odd sound from the passenger side on a cold start. Thought it might have been the exhaust manifold. Turns out I have an exhaust leak where the exhaust pipes connect. Before the muffler and after the Y bend. Any idea if this is something I can just tighten back up? Buy new bolts? Currently have 41000 miles
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Exhaust leak
- Thread starter Paaool
- Start date
Sounds easy enough. Have you done this?
Ditto
6of36
Spends too much time on here
Very common. Dissimilar metals causes them to corrode. If you can get the old bolts out, it's an easy fix. You may need a torch, to heat them. Put anti-seize on the new bolts, to slow corrosion.
Jako
Spends too much time on here
Had some bad experience with stainless steel and aluminum.
en.wikipedia.org
Galvanic corrosion - Wikipedia
6of36
Spends too much time on here
Yeah, most people don't know about these things. I used to be a sheet metal worker, and have a handbook that shows the degree of incompatibility. Aluminum to copper is the worst, followed by aluminum to stainless. Being that neither rusts on their own, most people don't think they would corrode at all. Whenever we hung stainless ductwork, we would put a layer of duct tape, between the duct, and the hangers.Had some bad experience with stainless steel and aluminum.
View attachment 179151Galvanic corrosion - Wikipedia
Jako
Spends too much time on here
Wiped out a sillcock using ss screws to galvanized house attachment with aluminum inside. The aluminum took the brunt and was the sacrificial metal. I knew about galvanic reaction years ago from a plumbing leak. The sillcock gave me a refresher along with aluminum valve caps on my Ram.
Valve stem caps - beware of aluminum
Purchased a second hand set of 20" Laramie wheels for my Bighorn. The tires came with aluminum valve stem covers. Didn't put any thought into the valve stems at the time. Today I went to check the air pressure and "galvanic reaction" had set in. Not a good moment. I managed to get them off...
5thgenrams.com
How did you realize that’s where the leak was, I may have the same problem, I just took a look at the clamp today and it’s definitely not even alway around, one side of clamp is larger then other
Morenar
Well-Known Member
I've seen people spray soapy water on it and then start the truck.
6of36
Spends too much time on here
With the truck running, just put your had an inch or so away from the pipe, so you don't bur your hand, and you will probably be able to feel the exhaust coming out, besides hearing it.
I started the truck. First checked the exhaust manifolds. Was thinking it could be that. They seemed fine and not broken. Went under the truck. Went to the flange and can hear the exhaust coming out and can feel it. As well as some moisture. As the truck heats up the sound sort of goes away. Waiting for the bolts and new gasket to be delivered
06104416AA bolts
68505222AA gasket
One bolt was complete snapped and seized inside. Second bolt snapped as soon as i tried to take it off. Ended up having to bring it to a muffler shop to drill out
6of36
Spends too much time on here
A muffler shop shouldn't have had to drill. Just heat, and remove. Even if it's flush, a good muffler man, should be able to blow it out with a torch. I used to manage a muffler shop, in my past life, and used to blow out a half dozen Chevy exhaust manifold bolts a day, without damaging the threads.
