HELP New engine setup= No fuel
Thread Starter
Joined: Apr 2002
Posts: 1,470
Likes: 15
From: Mesa, AZ
HELP New engine setup= No fuel
I just setup my new s5 TII engine into my s4 NA. I'm running it NA and have all the tubbing and blocks offs all good. I tried starting her up and I am not getting fuel. I checked for spark and its there. Just no fuel. With the fuel line disconnected the fuel only comes gushing out when I crank the car, nothing happends in the on position.
Can someone please help me figure out what it might be thats causing me to not get fuel into the engine?
Can someone please help me figure out what it might be thats causing me to not get fuel into the engine?
Thread Starter
Joined: Apr 2002
Posts: 1,470
Likes: 15
From: Mesa, AZ
BTW, im using s4 ecu and wiring harness... I also had to cut the wires and lengten them for the MAF. There were 3 black wires exactly the same looking, i thought they are all grounds so i just connected them to any other black wire.
Open up! Search Warrant!
Joined: May 2002
Posts: 3,838
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From: Kicking down doors in a neighborhood near you
The AFM (air flow meter, mot MAF) has a circuit that allows power to go to the fuel pump when the ECU reads that the AFM flapper door is open. If you connected the wrong wires, this circuit won't give the pump power.
Thread Starter
Joined: Apr 2002
Posts: 1,470
Likes: 15
From: Mesa, AZ
I just disconnected the return fuel line and cranked it for 3 seconds and it filled up the buttom of my big bottle.. I have a walbro 255lph in there. and it is working, so something with the injectors.
SOLD THE RX-7!
Joined: Mar 2001
Posts: 7,451
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From: Vancouver, BC, Canada
as posted above the fuel pump won't be on if the AFM is wired wrong... it'll turn on while cranking. but turn off as soon as the key is turned back to "ON"
ground the fuel pump connecter at the pass shock tower. this bypasses the AFM switch and the pump will always run when the key is "on"
this is a temp solution. don't drive the car like this. if it runs with it jumped. take out jumper and fix the AFM wiring.
ground the fuel pump connecter at the pass shock tower. this bypasses the AFM switch and the pump will always run when the key is "on"
this is a temp solution. don't drive the car like this. if it runs with it jumped. take out jumper and fix the AFM wiring.
Thread Starter
Joined: Apr 2002
Posts: 1,470
Likes: 15
From: Mesa, AZ
No guys, your not understanding me. Even when the pump is pumping while im cranking, im still not getting any fuel into the engine. The injectors arent spraying.
Im Ron Burgandy..
Joined: Mar 2004
Posts: 329
Likes: 0
From: Greenville, South Carolina
check the fuel lines and fuel filter. there could be a kink in your fuel line under the drivers side of the car. and of course you could have water in your fuel filter.
-chris
-chris
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Thread Starter
Joined: Apr 2002
Posts: 1,470
Likes: 15
From: Mesa, AZ
"I disconnted the RETURN fuel line and got fuel out of it when cranking" if the line was kinked or I had water or whatever in the filter it would not go all the way around through the fuel rail and back into the tank like its doing.
Like I said its something with the injection system, they arent spraying for some reason. Any one have ideas or ways of checking them?
Like I said its something with the injection system, they arent spraying for some reason. Any one have ideas or ways of checking them?
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