![]() ![]() I did buy Permatex ultra-high heat copper exhaust manifold gasket maker and was thinking about applying a very, very thin coat to both sides of the gasket when I reinstall it. Depending on the weather I hope to get to it this week. I've been busy and it's been raining since, but I have everything I need to reinstall the new OMIX-ADA manifold with Fel-Pro gaskets and new bolts. I don't have any photos readily available, but the manifold definitely had some warping to it when placed on the sharp edge of a flat T-square. I don't think I even had to heat those puppies, they just un-threaded like a dream. Wouldn't you know, both bolts came out with my bare fingers, no pliers, no stud extractors required. I did use a pass-thru socket on the front-most (lower) bolt because it sits so close to the engine mount.Īfter all bolts were removed I slid the manifold over the last 2 broken bolts (one upper, one lower). I did this with only the driver's side jacked up and wheel removed so I could get under there easier. The whole disassembly took probably 2 hours. With a 3/8" ratchets and 6-point sockets, I effortlessly broke free each of the 6 bolts one at a time, in probably 20 minutes. After removing the air box I got in there with a my MAP gas torch and heated whatever bolt I was going to work on first, then sprayed it with PB Blaster, then torched it and sprayed it. I read up on the subject, then sprayed the manifold bolts heavily for 2 or 3 days with PB Blaster and let the Jeep sit. I paid $300 for the Jeep, that was not going to happen! I was pleasantly surprised that I could see and feel the tips of both broken bolts on cylinder 7 and knew they were not broken flush with the head. Originally a dealership quoted me $2,300 to do the job and an exhaust shop (recommended by a friend) told me they needed to pull the motor to do the job and it would cost $1,300-$1,500. Apparently no one could diagnose this because they kept telling him it was the injectors, which he says he replaced. A few months ago I bought a 2000 WJ (227,000 miles with about 16 New Jersey winters on it!) from my neighbor had some work done on it a couple years ago and then gave up due to a 4.7L exhaust leak (rear driver's side) causing a terrible misfire and occasional stalling at idle. Just wanted to add to this forum/thread since it's been so helpful for me. If it is an exhaust manifold leak, is there any harm in driving it until I fix it or will I damage something (besides my wife's hearing, "what's that terrible noise")? Once warmed up, the engine sounds and runs fine. Any other ideas what it may be?Īssuming it is the exhaust manifold, are there any good instructions on the Internet about how to remove it? Does the manifold have to be replaced or just the gasket? Removing a bunch of rusty old bolts in tight quarters doesn't sound like much fun but I can't afford to have it done, I'm retired and have the time to do it myself so why not. I guess now it's time to take the exhaust manifold heat shield off and see what's going on. I checked under the Jeep and everything looks connected to the exhaust pipe. I'm guessing that it is an exhaust manifold leak. The noise totally goes away after the engine warms up. It sounds terrible and is coming from the driver's side of the engine. I always had a slight ticking on cold start up but all of a sudden the slight ticking turned into loud ticking and exhaust noise. ![]()
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