[Squidward]

I finally got the tank installed on my 67 Firebird. I did a 600hp FiTech install.

I am running the in-tank Hyperfuel pump (255), out to a Tanks, Inc. EFI return style regulator via some bent/flared hard tubing and Parker Push-Lok hose and AN6 fittings. The regulator return goes back to the return line connection on the pump body. The regulator outlet feeds to the factory 3/8 fuel line that has been plumbed for AN6 fittings.

Pump: https://www.summitracing.com/parts/hpf-40015/overview/
Regulator: https://www.summitracing.com/parts/tnk-afpr1

Yay! None of it leaks!

But here is my problem...

I get no fuel pressure on the regulator gauge. I've adjusted the screw to about as much as it should go, but no love. Pump pwm has been increased to max (full flow), but still no pressure. The car will start and run for a second or two after the key-on priming, but dies immediately.

1. I tried pinching off the return hose to see if my regulator was bad. Still no pressure, no run.

2. I am thinking about bypassing the regulator and dead-heading my pump briefly to see if the car runs. The throttle body has a built in regulator on board.

3. I also thought about plumbing the return outlet on the throttle body (currently capped, return line comes off the regulator) to a catch can/bottle just for test purposes. By doing this I could avoid dead heading the pump.

4. Next step after this would be dropping the tank, pulling the pump, and sinking the pump into a bucket of gas to see what happens. Possible leak at the discharge of the pump to the pump assembly body?

Any other suggestions would be welcome. I'm sure some of you guys know some tricks of the trade in troubleshooting pumps/regulators.

I'm starting to think that using an LS filter/regulator kit as previously suggested in my other thread might have been a better solution. https://www.summitracing.com/parts/cmb-03-0263