J-Spec swap - Fuel continuous flow when jumping wire
#1
MattB
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J-Spec swap - Fuel continuous flow when jumping wire
so i am checking the fuel system on my j-spec swap, and it juts flows continuously when i jumper the fuel pump...i read in the hayes manual it should fill, and then stop...but if it keeps going then i need to fix something.
Could it be my FPR? I have another i could swap in....
any good ideas?
-Matt
Could it be my FPR? I have another i could swap in....
any good ideas?
-Matt
#2
HAILERS
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No, if the Haynes says that then they are wrong as rain.
The pressure in the rail will be around 37psi with the jumper plug jumpered and engine off.
The fuel pump puts out around 90 psi. So, anything over the 37psi gets sent back where it came from. Thay's why if someone premixes he does not worry about the premix getting mixed with the fuel..........continuous flow from the tank to engine and back. Always a flowin
The pressure in the rail will be around 37psi with the jumper plug jumpered and engine off.
The fuel pump puts out around 90 psi. So, anything over the 37psi gets sent back where it came from. Thay's why if someone premixes he does not worry about the premix getting mixed with the fuel..........continuous flow from the tank to engine and back. Always a flowin
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I'm a boost creep...
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Originally Posted by MattB
so i am checking the fuel system on my j-spec swap, and it juts flows continuously when i jumper the fuel pump...
i read in the hayes manual it should fill, and then stop...but if it keeps going then i need to fix something.
Could it be my FPR?
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