I just got my 1978 Z back yesterday. Brand new 6-1 Header, MSA Exhaust, 6 brand new injectors with brand new pig tails, new MSD Ignition coil, Throttle body and IM were cleaned on the inside, EGR system was removed and welded shut.
The Car starts and idles fine, but as soon as I get on it in 1st it will sputter and hesitate like a fuel cutout almost and then kick back in. I have only driven it at 3-5 minutes clips at a time and it tends to happen once or twice in that driving period. I am checking my TPS now, which I can only assume is the issue (that or contaminated gas, or maybe a bad fuel pump?) If that's the problem, I am picking up a 1976 Z today with a brand new fuel pump in it so I'll just take that one).
It seems to rev up fine and has plenty of power, but this sputtering/ cut out makes me nervous. I could be doing 15-20 in 1st with my foot on the gas and it will sputter, backfire a bit, will stop revving and slow down, but then kick back in 1-3 seconds later. Anyone have any ideas?
Also, my car still has a very slight misfire, and I just can't figure out what the hell it is.