I am a newbie so please be gentle with me. I need to lay down some history
on the car first, I have an auto 86gt with the 2.8 that came with the car.
I had the engine rebuilt by a machine shop near me in nj and the block had
to be bored and oversized pistons put in, since i had left the job of
tearing it down to weather and rust formed. i decided to put on heads from
the fiero store, a mild cam that they were selling, roller rockers, new
rods. decided to do it up a bit. i was having trouble starting the car at
first. turned out the fuel injectors were trashed. rebuilt injectors were
put in. started fine, still wasnt running great. took it to a fiero
enthusiast who works on them, a week later and $400, a new egr solenoid.
pick it up and 20 minutes later starts running crappy and sets an egr
code. after searching the web for answers, i checked vacuum to the egr and
that was the culprit. ran fine for a few months. then she backfired and
died one day. changed distributor coil and ignition module (both delco)
started up and ran rough. replaced wires (they crumbled from heat
exposure), plugs, cap, rotor,put heat shield on the plug ends. checked
timing. timing is ok, but unstable. checked resistance on the pickup coil
and it was within spec according to haynes manual. still runnning like its
missing at idle. at speed it seems better. takes a long time to get back to
1000rpm when you stop at a light also. like a minute almost. I was thinking
it might be a distributor or fuel injector problem. but they were both
replaced already. distributor is from the fiero store btw. another thing i
can't understand is, while trying to let it idle and find the problem after
awhile, the next time i go to rev it up it spits out a small amount of
blackish smoke! im at wits end ...anyone?

thanks
john