The best suggestion I can offer is to start with diagnosis and try and figure out what is missing at the time the problem occurs. The entire time I was reading your post I was asking what the fuel pressure was, I think that might be a good place to start as it’s something that hasn’t been checked yet. Good fuel pressure test kits have adapter sets for a variety of set ups so that you can get a reading, they also sometimes come with instructions on where to hook up on your particular vehicle. You may be able to rent one from an auto parts store or something, the kit that I have is from OTC and it works great.
Yup, most autoparts stores will have one for you to rent.
You will need the special GM TBI adaptors for that, so make sure the kit you rent/buy has them.
Maybe you didn’t understand what I was saying, There is NO place to connect a shrader type pressure tester, or any other for that matter. This thing is hard piped from the fuel filter (on the side of the frame under the drivers seat) to the throttle body. I had a hell of a time reinstalling the fitting to the throttle body when I replaced the gasket. GM in their infinite wisdom left NO slack to work with. Best I’m gonna do is install a piece of fuel line I cut off a junker that has the shrader fitting on it. Even this will be a chore due to the lack of slack in the line. I’m gonna try this the next decent day we have (upstate NY) and see if I can get a reading. Do you guys know what the static and cranking pressure should be? Thanx for your reply…..
+1 on there being adapters for your set up, I don’t think you need to go through the trouble of putting in a different line to take a pressure reading.