oil return line?

[ThUnDaKaT85]

ok, i replaced my exhaust manifold today, and got everything back on the way it was except for a stud that holds the manifold to the block, the one thats all the way to the far right on the bottom, i couldnt get it back on, it wouldnt bolt back in. the other 8 nuts are on the studs very tight. could this cause any problem what so ever? because when i press the gas in any way, it bogs way down then gets back up, and its ok up until i hit about 2000 rpms, then it just loses acceleration, it wont go any where, i cant break 50 through all 5 gears. and ill get a puff of smoke out of the back of the car. and my oil pressure isnt all that great. also, when i did my manifold, i had to pull the manifold/turbo assembly away from the block cause i couldnt get the turbo stud off. could this have pinched shut my oil return line? if i did, could it be causing my problem? could anything else be wrong?

 

[Lordpaxin]

I dont see how a pinched oil line would cause that problem.

are you saying there is a gap? between the head and the exhaust manifold.

check your turbo for play, and free spinning

 

[ThUnDaKaT85]

im not sure if theres a gap or not, i cant get in to see at that angle. if the stud wouldnt go back in, could it cause a big enough problem to where my car wont accelerate? also, when i get up to about 3100 rpms, thats the highest i can go in any gear and itll just keep backfiring

 

[markmakeitso]

The turbo oil return should be flexible enough to handle shifts like that, so I'd guess that's not the problem. Did you take the studs out or just take off the nuts? As for not getting the last nut back on, were the other nuts all tightened down when you tried to get the last one on? You should get all the bolts and nuts threaded on before you tighten any down tight, otherwise the piece may not fit right. Usually it's a bigger problem with valve covers and heads, but it's not impssible that an exhuast mani would not quite line up with 8 nuts tightened down. Check for evidence of exhaust leak around the untightened nut, that might solve your lack of power.