Fuel Pump And Check Valve

[chook]

Got a SARD fuel pump for my Stagea (R34Gtt engine) installed about 6 months ago. Last week lost fuel pressure and stopped, towed home, took out pump, tested it and it worked, reinstalled, no problem since.

However, since then it stuggles for about 10 sec on cold start only, so Im thinking the pressure check valve is stuffed and losing pressure in the lines when i switch it off.

So is the check valve situated in the pump or is it the small 'thingy' on the fuel lines inside the tank ?

thanks

[GeeTR]

OEM, I think its built into the pump. There is a "thingy" inside the tank, on the OUT line, but its a pressure dampener I believe. You would have seen it when you slapped the SARD unit in.

[chook]

OEM, I think its built into the pump. There is a "thingy" inside the tank, on the OUT line, but its a pressure dampener I believe. You would have seen it when you slapped the SARD unit in.

thanks, FAST shows a 'check valve' on the outside of the tank as well, guess ill drop the tank soon and check everything. How do you check if the pump's check valve is gone ? blow the opposite way and check for back-pressure ?

[GeeTR]

Yup, thats what I'd try.

Interesting Stagea's use a check valve on the outside of the tank. Theres def nothing like that in a BNR32; between the tank in/out connections <--> under body steel fuel line.

You should be priming the car with ACC on, before hitting the START position too.

Just let it whine away until it stops, then START.