04 GX: anyone replace either exhaust manifold (or both)?
#1
Driver School Candidate
Thread Starter
Join Date: Sep 2004
Location: AZ
Posts: 7
Likes: 0
Received 0 Likes
on
0 Posts
04 GX: anyone replace either exhaust manifold (or both)?
One of my exhaust manifolds has been really loud for over a year now, just at startup. Sound becomes more quiet as the engine heats up.
No lights on dash, but I do have emissions here so I'd like to get it fixed early 2016.
Curious what the shop charges for this install. Or if it's worth it to do both at once.
No lights on dash, but I do have emissions here so I'd like to get it fixed early 2016.
Curious what the shop charges for this install. Or if it's worth it to do both at once.
#2
One of my exhaust manifolds has been really loud for over a year now, just at startup. Sound becomes more quiet as the engine heats up.
No lights on dash, but I do have emissions here so I'd like to get it fixed early 2016.
Curious what the shop charges for this install. Or if it's worth it to do both at once.
No lights on dash, but I do have emissions here so I'd like to get it fixed early 2016.
Curious what the shop charges for this install. Or if it's worth it to do both at once.
#3
Sorry, I missed an obvious diagnostic tidbit. With some certainty, it would be a gasket failure and/or a compromised fastener (nut backed off or sheared stud). The fact that it quiets with warm up is highly suggestive that metal expansion of mating surfaces more or less plugs the leak. That would not happen with a hole or puncture in or manifold or exhaust pipe. BTW, it looks more like a header than a manifold. So you are looking at labor mostly. Early 90s Nissan Pathfinders and pickups with the 3.0 V6 were notorious for a stud failure on the exhaust manifold. I have never heard of it on any Toyota V6 or V8, but odds are it might occur rarely. Barring any trickery with removing a broken stud, you might luck out with just 3 or 4 hours labor.
Thread
Thread Starter
Forum
Replies
Last Post