Quote:
Originally Posted by RFaber
No codes, I had a misfire code last summer, while hauling my trailer up a pretty good size mountain pass. Changed plugs and all the ignition coils. It’s been good since! O2 sensors seem to be outputting proper values, I use mid grade - 89 or premium -91
The rattle is at startup, and while idling, I don’t hear it during highway driving,
I’ve gone underneath and it’s coming from the rear cat just before the pipe bends to travel to the rear. It’s not a heat Shield, I’m suspecting the packing material around the cat has shifted and allowing the rattle, the cats looked plugged. So I’m changing both! And I may do my valve stem seals, and possibly the head gasket depending how the exhaust bolts come out!!!
|
Definitely possible to get the exhaust manifolds off with the head still installed. I did that on my M54B30 last summer. That task was one of the tougher parts of the whole experience, but definitely done. If you search for posts of mine, I think I mentioned the difficulties, and maybe tricks I did to get it done. So I would definitely not be looking to do a head gasket just because it's tough to get the exhaust manifolds off.
Good luck on the work.