new motor not getting fuel

efmd3 · 03-16-2009, 06:13 PM

Ok, so I have been building my block for 8 months and I finally get to the last few steps, priming the oil and whatnot.

This car has sat for 8 months with no battery or motor, etc. It did have gas in the tank, and all the fuel components worked great before the old motor came out.

Things that have changed since it last worked:
new motor
no tgv's or motors/etc
no ac
no rear o2 (for the moment)
no maf
new fuel filter
new fuel rails
new injectors
new FPR

now, I know what you're thinking, but I took the main line off the filter and no fuel there, so what do you think may be causing this.

One theory is the walbro has blown seals from sitting in 8 mo old gas.

Dumb things I haven't checked yet:
I haven't pulled the pump yet (its raining but this is first on the list)
Clean out gas tank and refill
pull line off pump and check for fuel.

I tried using an OBDii scanner to see if it was pulling codes, but it keeps getting errors...

Will try using the tactrix to read what map is on there, but that shouldn't keep fuel from making it into the engine bay...

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Fongers · 03-16-2009, 06:22 PM

When you turn the car on (not cranking it), do you hear the pump in the back go on for 4-5 sec? If not, than you're power to the gas pump is not working, start there and work your way the line....

efmd3 · 03-16-2009, 06:27 PM

Quote:

Originally Posted by Fongers

When you turn the car on (not cranking it), do you hear the pump in the back go on for 4-5 sec? If not, than you're power to the gas pump is not working, start there and work your way the line....

sorry, forgot to mention that it DOES make noise, but only when the car is in test mode

mick_the_ginge · 03-16-2009, 07:03 PM

My guess, you have put the fuel lines on backwards. Ie the feed is connected to the wrong side of the FPR and the return is connected to the feed side.

69subaru360 · 03-16-2009, 07:55 PM

Quote:

Originally Posted by mick_the_ginge

My guess, you have put the fuel lines on backwards. Ie the feed is connected to the wrong side of the FPR and the return is connected to the feed side.

x2 I've done it myself.

efmd3 · 03-16-2009, 08:40 PM

black=fuel feed
silver=fuel return
blue=tank vacuum

blkwagon · 03-16-2009, 09:29 PM

make sure you have them going to the fuel rail the right way...i fought this problem for a few days

mick_the_ginge · 03-16-2009, 11:29 PM

And connected to the FPR the right way, the FPR should be on the return rail.

Oh and connect up the MAF sensor, the subaru hates running without a MAF. I should have spotted this the first time around

efmd3 · 03-17-2009, 12:15 AM

Quote:

Originally Posted by mick_the_ginge

And connected to the FPR the right way, the FPR should be on the return rail.

Oh and connect up the MAF sensor, the subaru hates running without a MAF. I should have spotted this the first time around

I found the problem, somehow the FP relay under the dash on the passenger side was unplugged.

Now I have a bigger problem...agency power fuel rails...
these things SUCK
they leak like a mofo.
time for some better rails, suggestions?

03-16-2009, 06:13 PM	#1
efmd3 Scooby Specialist Member#: 120985 Join Date: Jul 2006 Chapter/Region: South East Location: Birmingham, AL Vehicle: 2002 Impreza WRX Midnight Black Pearl	new motor not getting fuel Ok, so I have been building my block for 8 months and I finally get to the last few steps, priming the oil and whatnot. This car has sat for 8 months with no battery or motor, etc. It did have gas in the tank, and all the fuel components worked great before the old motor came out. Things that have changed since it last worked: new motor no tgv's or motors/etc no ac no rear o2 (for the moment) no maf new fuel filter new fuel rails new injectors new FPR now, I know what you're thinking, but I took the main line off the filter and no fuel there, so what do you think may be causing this. One theory is the walbro has blown seals from sitting in 8 mo old gas. Dumb things I haven't checked yet: I haven't pulled the pump yet (its raining but this is first on the list) Clean out gas tank and refill pull line off pump and check for fuel. I tried using an OBDii scanner to see if it was pulling codes, but it keeps getting errors... Will try using the tactrix to read what map is on there, but that shouldn't keep fuel from making it into the engine bay... * Registered users of the site do not see these ads.

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03-16-2009, 06:22 PM	#2
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03-16-2009, 07:03 PM	#4
mick_the_ginge Citizen Mick Member#: 27646 Join Date: Oct 2002 Chapter/Region: NWIC Location: Portland, Oregon Vehicle: 2003 Sleeved 2.5 Oil Dry Sump Goodness	My guess, you have put the fuel lines on backwards. Ie the feed is connected to the wrong side of the FPR and the return is connected to the feed side.

03-16-2009, 08:40 PM	#6
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03-16-2009, 09:29 PM	#7
blkwagon Scooby Specialist Member#: 102857 Join Date: Dec 2005 Chapter/Region: BAIC Location: Fresno Ca Vehicle: RHD sedan sti swap high on meth	make sure you have them going to the fuel rail the right way...i fought this problem for a few days

03-16-2009, 11:29 PM	#8
mick_the_ginge Citizen Mick Member#: 27646 Join Date: Oct 2002 Chapter/Region: NWIC Location: Portland, Oregon Vehicle: 2003 Sleeved 2.5 Oil Dry Sump Goodness	And connected to the FPR the right way, the FPR should be on the return rail. Oh and connect up the MAF sensor, the subaru hates running without a MAF. I should have spotted this the first time around