NJFBOA - Home of New Jersey's Camaros and Firebirds - View Single Post - Rebuilt 350 smoking a little at start-up

Pampered-Z · 06-01-2007, 09:22 AM

It's probably doesn't, but if it has the computer controller quadrajet carb check the choke vacuum valve and make sure the choke is opening all the way. When they go bad they can stay partially closed so you get a puff of black smoke at start-up. Can also get pulled closed at WOT causig black smoke.

I did valve seals on my 84 only to find the problem remained and it was all caused by the choke. ECM did net set any codes either.

JB

06-01-2007, 09:22 AM	#9
Pampered-Z Sliderule / Moderator Join Date: Oct 2004 Location: Catawissa PA Posts: 2,294 iTrader: (1)	It's probably doesn't, but if it has the computer controller quadrajet carb check the choke vacuum valve and make sure the choke is opening all the way. When they go bad they can stay partially closed so you get a puff of black smoke at start-up. Can also get pulled closed at WOT causig black smoke. I did valve seals on my 84 only to find the problem remained and it was all caused by the choke. ECM did net set any codes either. JB __________________ 93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada 1) Build it 2) Race it 3) Break it 4) Repeat!!!