3 replies to this topic

[Brandon]

I installed the Adv. Auto's adjustable FPR this weekend but I noticed (and don't remember before with the test-port installation) there was a LOT of fuel coming back up out of the hard return line. A significant quantity of fuel came flowing out of the return line (a dozen of the blue paper shop towels were soaked).

Could this be a sign of a pinched/partially blocked return line (presuming it goes back to the tank) and if so, would a visual inspection of the line as they run down the passenger side of the underbody suffice to find any potential 'squished' line?

How would I remedy fixing a squished line?

Corollary question: if I had a squished return line would that artificially raise the fuel pressure in the rail?

Thanks,
Brandon

[davew]

Ever notice the WOOOSH of air when you remove the gas cap. The tank is under a slight pressure. That is what you saw.

Any of us with kids knows how much of a puddle a sippy cup of milk makes on the kitchen table. You really did not spill that much gas.

Dave

[Brandon]

Thanks Dave. I'd not thought of that. And I always presumed it was a vacuum causing said "whoosh" and not pressure.

Back to your regularly scheduled programs!

[fotostars]

Thanks Dave. I'd not thought of that. And I always presumed it was a vacuum causing said "whoosh" and not pressure. Back to your regularly scheduled programs!

Yeah, I second Dave. Had the same experience when I installed FPR and test ports. Also noticed that fuel expands A LOT with temperature variations.
I had the lines disconnected for a few days and coming back to the garage at night after a hot day, a big puddle had formed. I had to plug the lines.