m20 starting problem

[603Racing]

Try putting 12v directly to the pump, see if FP goes up.

[mr.vang]

Try putting 12v directly to the pump, see if FP goes up.

so just run a wire from the + battery to the fuel pump + wire? there should already be a ground in the tank right?

update. so i got a new fuel pump (life time warranted from previous owner) so its free. i also replace the fpr with a working one and still no start. tomorrow i'm going to borrow an afm and ecu from one of my buddy, hopefully its one of the two.

[mr.vang]

Try putting 12v directly to the pump, see if FP goes up.

Still no luck with12v directly to pump. Replace the ecu and afm, same shit. Fuel pressure is still at zero.

[naomiswanson]

I guess the problem is in the FFR or it would be the pump engine.Nevertheless, you can't notify that kind of problem if you did not check it specifically the car fluid. However, try to have this option you may going to contact some expert so that you can really understand what is the problem with your car.

[Quinthirty]

when the engine is cranking or the fuel pump relay is jumpered says that; a) the pump isn't getting power, b) there is an obstruction in the supply line, c) the pump is bad.

I'd go with A and C. You did mention that it was buzzing when its cranking but not when its on so it would be good to re-check the wiring.

[AndrewBird]

Aren't the fuel filters made to only flow one direction? Maybe you installed your new one backwards? Not sure if there is some kind of one-way valve built into them.

Seems like there is something between the pump and the engine bay that is blocking the line. Maybe there is a pinched hardline somewhere?

[berlow94]

After my car sat for the winter i had the same exact problem. We ended up running a wire directly from fuse #11 to the + on the fuel pump. Then running a new ground from the pump to the frame. Started right up. I have an 87 which has a duel pump set up, it was the external high pressure pump that wasn't getting the power. I converted to a single in tank pump which took all these problems away. Is your's a single or dual pump set up. Have you tested the fuel pump leads with a multimeter? After that i would check for continuity between fuel pump and fuel pump relay. Giving your c101 plug a jiggle would't hurt either. Good luck!

[mr.vang]

I replaced the external fuel pump and now its running. Idle pretty dam smooth too. Thank you guys for all the help.