For a while now i've been getting this hesitation and black smoke just after warm up..the car starts to shake and puffs of black smoke would come out...that was the normal stuff i was getting....so this weekend i didnt really use the car...this morning i go start it up...let it warm up...the black smoke came back...so i decide to let it run until it clears itself out...after about 5 mins and the same stuff going on, i attempt to rev it out a bit...the throttle is very staggered and when it revs pasted about 3500 rmps...massive amounts of black smoke came out...really thick clouds of this stuff...now a while back i noticed brown stuff in my coolant...maybe this is the cause?...any suggestions....engine check light has come on reading thermosensor,o2,and egr valve...ive ordered all but the egr..waiting for those but in the meanwhile i would appreciate anyones thoughts... my car has a racing beat downpipe and catback,gutted midpipe,flyuidine radiator,racing beat wires,stock ngk leading and trailing plugs,and ast....please help guys....thank you

Do a compression check first.



I think your oil control rings took a ****. How many miles on the motor?



Do you have any form of engine control on the car with that full exhaust?

Got about 89xxx on the motor now but it looks like its been rebuilt so not too sure...i was planing on getting a haltech e6x by feb. i gutted the cat because it was cloged and warped...im keeping an eye on boost at all times

so did you do a compression check?