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FUEL PUMP FUEL LINES AND FUEL PRESSURE REGULATOR 2.9 4.0l swap :icon_confused:


BabyBronco89

Well-Known Member
Solid Axle Swap
Joined
Dec 9, 2011
Messages
360
City
GR Michigan
Vehicle Year
1989
Transmission
Manual
okay so heres my question
does the high pressure line that runs through the fuel filter from the fuel pump go to the fuel pressure regulator or does it connect to the fuel rail and the other line and vice versa

i cut both lines when i was doing my 4.0 swap and now i dont remember how they went.
i also dont seem to be getting very much fuel pressure at the rail( from the check valve) if any although whenever i turn my key you can hear fuel pump kick on, when fuel line was disconected it shot fuel out, just not after the key is on?
how should i check this?

right now my battery is dead and on the charger
but i have spark and the only other thing i can thing of is fuel or maybe Neutral saftey switch bs but idk???:icon_confused:
 
Okay so I figured it out...
I had them hooked up wrong for future reference for anyone having this question, the fuel line coming off the fuel filter goes to the fuel rail not the regulator, the regulator is connected to the fuel return line back to the tank.
I switch these lines and she fired right up :D
4.0 is freakin amazing!!!
 

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