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Pressure regulator

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Xtultegra
Posts: 9
Joined: February 19th, 2019, 12:44 am
Vehicle Year: 1991
Vehicle Make: Jeep
Vehicle Model: Wrangler

Pressure regulator

Post by Xtultegra » July 21st, 2019, 4:58 pm

I did a search and didn't find anything here so I apologise if I'm asking an already answered question.

Why can't you use the external, inline pressure regulator/fuel filter from a WJ when using a returnless fuel rail? It has a return line on it and is set at 49 psi.

astjp2
I think I'll order a "tab"
I think I'll order a "tab"
Posts: 45
Joined: September 11th, 2008, 8:50 am
Stroker Displacement: 4.7
Vehicle Year: 1994
Vehicle Make: Jeep
Vehicle Model: Wrangler

Re: Pressure regulator

Post by astjp2 » July 28th, 2019, 12:46 pm

the fuel pressure is set in the tank by the regulator next to the pump. The Hesco FPR is designed for the older system and physically does not fit on the newer lines. You maybe able to cobble an older set of lines in your jeep, but you would be better off getting the correct injectors and the PCM mapped.

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