[Gmecm] TBI 350

[Denny]

I think you will find that you have a vac leak somewhere. I took the tbi off 
my 4.3 and put it on my 3.4 tonite just to see what would happen. It idled 
like crap,smoked like a train. HHmmmmm guess what it was? Throttle Body 
gasket was cracked. Put on a new one and all better. I found this by 
spraying starting fluid around the tbi unit. Just for shits and giggles you 
might want to try that?