dime1622

so i blow black smoke out the back when i get on the gas. running rich, obviously. sometimes, if everything goes right, it "burps" and misfires and sends a giant poof of black out the back. once it happened with a motorcyle right behind me anyway. i know my vacuum lines are screwed up, but i was wondering if there's anything else i should check. i'm in the process of getting new vacuum lines and redoing the whole vacuum system. can you think of anything i should check quick?

hally

You could check fuel pressure, but i guess vaccuum is screwing with that too.
Are u running the correct boost for your chips?

dime1622

lol, hell if i know. they were purchased by a PO in 1991 lol. cant afford to get some nice chips from huntley yet i never had the problem until i did a lot of digging in my motor and not everything is back up to par yet. especially the vacuum lines. several of them are broken.

Ski

get your vac lines fixed that should help with your rich condition.

fortysixandtwo

It could be the oxygen sensor too. But the vacuume lines are cheaper and probably need to be done anyway, so as others have said, start there.