Roush Car is bucking/missing/falling on its face under boost?

[grant3d]

Hey guys,

I have a 2001 S281SC with 44k miles on it. Recently I had some missing/bucking going on under boost so I had the plugs changed out. The car seemed fine for a few days until I had it detailed. I think when the engine bay was detailed something got wet that probably shouldnt have. Now the car just falls on its face under boost. I cant tell if its missing or what, but I can hear the exhaust note change dramatically. I took it to my local mustang shop and from a quick rundown he says fuel delivery is fine, the MAF checked out ok, boost bypass is working, etc. The plugs were just changed so it couldnt be spark right? I suppose one of the coils could be bad? Any suggestions would be much appreciated.

 

[grant3d]

Nevermind...my mechanic figured it out. There was moisture and degreaser all over the plugs and coil connections. I dont think I will be getting my engine detailed again

 

[marcus95]

Yea,

Save the motor detail for yourself. They don't give a Shi^ what they soak in there.

 

[Onefine88]

That has happened to me before on my 5.4 in my '04 F150. My Mechanic says these late model 4.6's and 5.4s are allergic to water. I clean them anyway with a pressure washer. Just have to be quick and careful. LOL