OK. so I've owned my new 2005 Mazdaspeed miata about 3 weeks now. I have had one thread about the breakdown of the condition of my car and it can be read here: (Just got the new 05' MS MX-5 home, first impressions & concerns
) for those who want to see the begining of my issue. obviously its a regular issue for MSM's to have loose manifolds and most well-educated owners tend to tighten thier nuts pretty frequently. anyways, here's my experience so far.
1) a sound occurs at cold-start or even when the car is warm but has setting for 10 minutes or more....
2) the sound is a whispy-cracky...(maybe like a weed-eater) sound...this noise only occurs on throttle
...due to high pressure exhaust shooting out of an orfice somewhere
3) after the car has been driven a few seconds...or has come to operating temps, the sound is gone.
turns out its an exhaust manifold leak, either due to a fault in the exhaust manifold gasket or a warp (heat warp) in the mating surface of the exhaust manifold gasket.
a dead giveaway of this issue is this
which is left over by exhaust gases leaking past the seal of the gasket
I have this on my cylinder head as well, and it was right above the runner off # 4
So i ordered an exhaust manifold gasket and dug in to try and fix the problem.
from some prior research, I found that a lot of people tend to break the studs in both the manifold outlet and the head-studs that hold on the manifold. I soaked all of the suds for hours in WD-40 to prevent this as much as possible.
I managed to get every nut loose on all NINE manifold studs working very slow and tapping a crescent wrench (14mm) + the 4 studs on the manifold to turbo inlet (12mm wrench) on each nut with a hammer (light taps)
the nuts on the top and bottom of #4 were very loose.
the studs that connected the manifold to the head all came off except some of the studs(3 of them), backed out of the head as well.
the manifold will not come off. looks like the studs on the turbo inlet themselves either have to be taken out... or the turbo has to be taken off.
by the way don't drop the nuts of the turbo inlet. you'll never find them.
Pretty much where I'm at now is all of the nuts on the manifold studs are off, as well as the nuts on the manifold to turbo inlet. the EGR is loose. so. the manifold wiggles...but I cant pull it off because it only has a little play....so looks like im stuck inbetween a rock and a hard place literally. should I just go Full on and take off the whole turbo or is there a way to get this thing to come off? ...idk well just leave it at that for now.
** this is supposed to be a write up for MSM owners to resolve this issue. still in progress and any advice is welcome.
pictures coming soon