Quote:
Originally Posted by HardcoreZ28
Tried it with and without it on....but not sure how it would make a difference.
|
Quote:
Originally Posted by HardcoreZ28
Fixed it....forced about 80 psi of air back through the supply and it cleared out some sort of obstruction.
|
I was kinda just thinking out loud. Not sure how it is on that Olds, but I'm fairly certian that on some pre-emissions stuff a properly working vented cap is needed to pull gas from the tank- otherwise a vacuum will form. That would leave the only thing blocking it being a bad sending unit sock, which you probably took care of with that air. It may have been clogged enough to pull shut when the pump was pulling, but couldn't pull shut when you were trying to draw at a lower vacuum. Was the tank/sender new?