Hi, my name is Jonny, come from Germany and have problems with my 350 TBI,
The problem is cold start and warm start.

The cold start starts very well and very clean, but after approximately 15-20 seconds the engine starts for 10sec. To spit and stutter, as I said only for 10sec. After that everything is good again.

The same is at warm start if he has something, he stuttered and catches after 10sec. Again and then runs very clean.

He has a slightly elevated and sometimes a perfect idle, but does not draw a side air.


All sensors new, O2 Sensor new, Complete ignition system new
TBI re-sealed,

 

My 93 had similar problem at cold start - idle rough for 1st 30-60 sec, then normal. Mechanic replaced distributor and fixed the problem. How many miles on motor?

 

94tmls, the distributor is the original Piece of GM 1988

 

Here is the video, he starts to spit after 2/3 of the video.

https://youtu.be/fm5rBaV6NyI

 

I think the "spit" as you call it is just normal exhaust system condensation that burns off quickly. The engine sounds smooth and the idle drops down nicely.

 

But the engine shakes strongly during this period and runs out of round with misfires.