View Poll Results: Cracked Exhaust Manifold
Yes, my manifold has cracked!
160
30.13%
Nope, my manifold is fine.
371
69.87%
Voters: 531. You may not vote on this poll
Has your exhaust manifold cracked?
JK Super Freak
Joined: Apr 2007
Posts: 1,671
Likes: 0
From: MONTREAL; CANADA
There was a hidden warranty w/t the tj and yj on the 4 banger
and the i6 six had it it as well
but for the price of it buy an aft market and have the dealer install it under warranty for the labour
and the i6 six had it it as well
but for the price of it buy an aft market and have the dealer install it under warranty for the labour
Thread Starter
JK Jedi
Joined: Nov 2006
Posts: 5,831
Likes: 2
From: SoCal, USA
My service manager is awesome. I pulled in, told him what noise I heard, stepped on the gas and rolled forward a little and he said it sounded like an exhaust leak. Popped open the hood and spotted the crack in seconds. Ordered under warranty 5 minutes later.... but it's backordered! And, apparently, not by people on this forum! 
JK Jedi
Joined: Oct 2007
Posts: 5,537
Likes: 0
From: Colorado
17K miles and no noise issues, haven't really inspected it closely though. The TJ had issues early on with the cracking before they corrected it.
I wonder if any other variables are at play, like muffler (stock, modded, or relocated), any off-road impacts on the exhaust, etc.
I wonder if any other variables are at play, like muffler (stock, modded, or relocated), any off-road impacts on the exhaust, etc.
JK Super Freak
Joined: Feb 2008
Posts: 1,027
Likes: 3
From: Winnipeg
I've been hearing a hissing/ticking sound coming from the engine for a while and it has gotten worse as time goes on. It's especially noticeable when the engine is cold and gets quieter as it warms up. Upon inspection, we found that the exhaust manifold had a fairly sizeable crack in it. The interesting thing is that, when the dealer went to order the new manifold (under warranty), he found they are on back order, leading us to assume that there have been quite a few cracked manifolds. I've been told this was an issue with the TJs when they first came out, so I'm just wondering how many JKs have been experiencing it as well.
Thread Starter
JK Jedi
Joined: Nov 2006
Posts: 5,831
Likes: 2
From: SoCal, USA
Like I said, my camera is broken. If I can borrow one from someone before I get it fixed, I'll take pics.