Vega2008 wrote: (...)
I can still start the car up, but I have to pump the throttle while cranking it to get gas up to the carb. I was wondering if I needed to swap out the stock fuel pump in the tank with one meant for a V6 or V8 electric fuel pump or not, and if so...what's a good recommendation if anyone has changed to a electric pump that squirts out more volume than a 4 cylinder electric in tank pump? Not sure I want to slide another 4 banger electric fuel pump into the tank if it isn't up to the task. Thoughts?
I'm no expert in Buick v6's but id have to say if you're pumping the throttle and the electric pump is out, it makes me think your mechanical pump isnt working that well to start with. Considering the AFV has its own fuel bowl there should already be gas in it when you go to start it , so you might have an issue up there as well.
Checking out an old post
http://forums.h-body.org/viewtopic.php?f=2&t=425 , they mention that there are different pumps for the I4 and V8 so a cheap upgrade could be to just use a generic replacement for a v8 monza.
My v8 is running a stock 4cyl pump and a good v8 mechanical pump and I have no issues, like I stated in here its the less than ideal way to run it but I use the electric pump for priming and a small addition to add flow to the mechanical pump. It would be worth checking fuel pump ground / wiring too.