PaperNinjaRotor

Okay so, in my RX7 i have compression, i have spark, oxygen, everything. But i pulled the line from my fuel filter today, because i finally got around to replacing the filter, and just to see if gas was even making it there, i turned the key to the on position, i heard the hum of the fuel pump, but nothing came out of the line, and i know for a fact there is gas in the tank because i put it there.

Thank you.

samjaza78

Did you put the filter on backwards?

PaperNinjaRotor

no, the filter is on properly, but thats not the problem, fuel isnt even making it to the filter!

cone_crushr

iTrader: (18)

Seems most likely a problem related to the fuel pump. Yank the FP hangar from the tank and see what you find. Is the rubber fuel line from the pump outlet intact. How does the pump strainer look?

satch

iTrader: (1)

Fuel pump does not turn on w/the key to on unless the fuel check connector was jumpered or the flapper to the AFM (S4) is opened.

cone_crushr

iTrader: (18)

^True, but the pump must prime to start the car when the key is turned to the start position, which is (presumably) why he heard the pump (if it was the pump). Fuel would flow thru the line to the filter momentarily.

satch

iTrader: (1)

You can get to the on position w/o beginning at the start position first. All he states is that he turned the key to on. He never suggested he turned the key to start first then released the key as it turned to the on position.

cone_crushr

iTrader: (18)

Correct, except for the fact that he heard the pump. Anyhow, I'll let the OP respond, either way it's a pretty trivial issue to troubleshoot.

PaperNinjaRotor

Okay, I am still learning this car, so do i need to drop the tank or what to do the above?

satch

iTrader: (1)

If you're looking to prove the existence of fuel flow all you need to do is place the fuel hose you played with earlier in a jug, jumper the fuel check connector, and then turn the key to on and you should see fuel quickly fill up the empty jug. Fuel check connector is part of the same harness as the Boost/Pressure Sensor so the connector is found on the bottom of the Emission Harness that runs between the engine and the passenger fender. It has two wires in a Yellow plug and the plug is encased in a Black rubber boot.

And is the car an S4 or S5?

PaperNinjaRotor

Honestly i dont know the difference between an S4 and an S5 this is my first foreign car ive ever owned

satch

iTrader: (1)

86 thru 88 are S4 and the rest are S5 (89-92).

PaperNinjaRotor

Its an S4