I have a 91Z28 thats been sitting for about 2 years and it has very bad gas in it. It has an access hole to the fuel sending unit/pump so I dont want to have to pull the tank to drain it.
What the best way to pump it out?
And should I remove the fuel rails and injectors to clean them or leave them alone and hope the new fuel goes through and cleans it. Also I'll need to clear the fuel lines.
I was thinking the fuel pump itself would pump the gas out but it only pumps when it turning over.

 

I'd personally drain everything and replace the fuel filter while you're at it ($6). I say this because I recently had to do something similar and it wasn't that hard. Disconnect the rubber likes from the metal lines in the engine bay and get what you can out, change the fuel filter (that'll drain a fair amount of gas from the hardlines), then find out how to drain the tank itself and you should be good.

 

You can jump the fuel pump by placing 12v to the "G" terminal on the ALDL. That will bypass the pump circuit and power the pump directly. I made a jumper wire for this (push pin soldered to a 12 ga wire with a fuse tap on the other end).

 

thanx stekman.....
uhhh.......where exactly is the ALDL? (embarrassed)

once I locate, I'll know what to do.

 

Underneth the dashboard by the fuse panel.

 

Right above your gas pedal knee, actually

 

Hehe sorry bout that. So can you guess when the last time my check engine light went on?