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Old 05-04-2018, 01:10 PM   #1
lowranger
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Join Date: Aug 2006
Chapter/Region: TXIC
Location: coppell TX. College Station
Vehicle:
03 wrx?
Pro tuned by Cobb Tooning

Default car cranks but will not start

Built motor - ran but sat for 3 months.
new 1300CC injectors
IAG fuel rails and lines
New fuel 450 fuel pump and wiring.
New AOS (not that this has anything to do with it. Only thing ive messed with since parking it)

Car ran perfect for a few thousand miles, then i started to have high fuel pressure issues (pegged at around 100psi) and parked it. I tried starting it this morning. Fuel pump turns on and I am getting fuel pressure via the Fuel Lab FPR. It seems like fuel is not getting thru the injectors.
Am i missing something?
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Old 05-04-2018, 04:03 PM   #2
subaru_gc8
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how much fuel pressure are you getting now? sounds like maybe your fpr isnt working correctly
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Old 05-04-2018, 06:51 PM   #3
lowranger
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Pro tuned by Cobb Tooning

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figured it out. not sure why or how or WTF. the motor was flooded. took the fuel pump fuse out and tried cranking her up, she actually tried to start instead of just cranking over. plugged the fuel pump fuse back in and started like a charm. seems to have fixed my high fuel pressure as well. very weird.
the FPR was set around 43.5 +/-. it was pegged at 100. It slowly went down the more times I tried to crank the motor. So the FPR is working just fine, just had a lot of back pressure in the motor for some reason.


cliffnotes: high fuel pressure. car wouldn't start after sitting for a few months. Too much fuel, released the pressure and BAM!.... turned over.
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Old 05-04-2018, 09:16 PM   #4
subaru_gc8
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maybe your fpr was stuck
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Old 05-04-2018, 11:19 PM   #5
Homemade WRX
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If you have good pressure (should be base pressure around 42 psi) when cranking, the FPR wouldn't be the issue with it not starting.
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Old 05-07-2018, 02:26 AM   #6
subaru_gc8
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Quote:
Originally Posted by Homemade WRX View Post
If you have good pressure (should be base pressure around 42 psi) when cranking, the FPR wouldn't be the issue with it not starting.
right but his engine was flooded at 100psi.... so too much pressure pusing out too much fuel
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Old 05-23-2018, 06:56 PM   #7
lowranger
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Quote:
Originally Posted by subaru_gc8 View Post
maybe your fpr was stuck
Fuel Lab days there couldn't have been an issue. That's why I was scratching my chin
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