LS1 swap high fuel pressure 100psi
#1
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Car: '91 LS6/T56/9"
Engine: LS6
Transmission: T56
Axle/Gears: Currie 9"/4.11, detroit truetrac
LS1 swap high fuel pressure 100psi
I'm getting ready to start my engine for the first time and primed the fuel system today. No leaks, but 100 psi of fuel pressure. Should be aprox 60 psi but I cannot figure out what's going on.
Racetronix fuel pump new
plastic tank
fuel pump relay good
Power at fuel pump good
Wix 33737 filter good (replaced my new one with another new one)
Russell classic hose
2 different gauges read the same pressure
Here's the car's build thread:
https://www.thirdgen.org/forums/memb...n-91z-ls1.html
What am I missing?
Racetronix fuel pump new
plastic tank
fuel pump relay good
Power at fuel pump good
Wix 33737 filter good (replaced my new one with another new one)
Russell classic hose
2 different gauges read the same pressure
Here's the car's build thread:
https://www.thirdgen.org/forums/memb...n-91z-ls1.html
What am I missing?
#2
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Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: LS1 swap high fuel pressure 100psi
Fuel filter has the pressure regulator in it and you no doubt plumbed it wrong
#3
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Car: '91 LS6/T56/9"
Engine: LS6
Transmission: T56
Axle/Gears: Currie 9"/4.11, detroit truetrac
Re: LS1 swap high fuel pressure 100psi
That was the very first thing I checked, just forgot to mention it in the post.
I physically traced the send and return lines from the tank to the correct ports on the filter. 3/8" input, 5/16" return.
I physically traced the send and return lines from the tank to the correct ports on the filter. 3/8" input, 5/16" return.
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Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: LS1 swap high fuel pressure 100psi
Then there is a restriction in the return line. Did you remove the pressure regulator from plastic tank?
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#8
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Car: '91 LS6/T56/9"
Engine: LS6
Transmission: T56
Axle/Gears: Currie 9"/4.11, detroit truetrac
Re: LS1 swap high fuel pressure 100psi
That was it. Pulled the regulator, Threw my original wix filter on and pressure is perfect. However, no start.......Troubleshooting now.
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