asiansuperstar

So my stock S5 turbo has been acting retarded lately. My car is having major isues keeping an idle. I need to rev the crap out of it to get it to go but only to get it to sputter around. It revs pretty smooth gradually to around 3-4k rpm and then sputters again and puffs out black smoke. I checked the lines and they seemed okay. I am thinking it's my plugs/wires/fuel pump. There is not oil leaks and the engine isn't smoking too bad. There is not check engine ligiht. My friend said it could be a blown seal. If it was blown would there be a light or some symptom? Thanks guys I def need help here.

J5sense

iTrader: (3)

bite the bullet and take one plug out from each housing. remove the fuse for the fuel pump and have someone crank the engine over and compare the 2 housings. im betting low compression mine was doing the same thing. elimanate the compression first then check fuel pressure, spark and what not