TII FPR failure... need to know some thing.
02-10-07, 04:29 PM
#1
The Shogun of Harlem
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TII FPR failure... need to know some thing.
Ok, I thought I messed up my LI-HI wiring for my injectors. But after testing the injectors, weve found that the injectors work AND ive got fuel pressure from the pump. However there is no fuel in either the primary or secondary fuel rails. We turned on the fuel pump with no secondaries in the fuel rail and fuel would not pour out of the rail, but would come out of the line going into the regulator. I took off the secondary fuel rail, cleaned it, and blew into the fuel nipple on the FPR but its like its blocked or something. What I need to know is the following:
A: Can I use an N/A fuel rail or FPR on a S4 TII fuel rail without issue?
B: The fuel is supposed to go in the FPR, through the secondary fuel rail, into the primary, and out of the primary correct? Could I have the fuel lines reversed somehow?
A: Can I use an N/A fuel rail or FPR on a S4 TII fuel rail without issue?
B: The fuel is supposed to go in the FPR, through the secondary fuel rail, into the primary, and out of the primary correct? Could I have the fuel lines reversed somehow?
02-10-07, 04:37 PM
#2
The fuel pressure regulator is going to be last in your fuel system. If you hooked up the fuel into the FPR you won't get any fuel.
Some people get confused when they drop Jspecs in because the fuel lines are reversed on them. So I can't tell you if you should have the fuel going into the secondaries or primaries. Just look at the position of the FPR.
Pump-----> Fuel Rail----> Fuel Rail ----> FPR (Last) ----> Return line
The Fuel pressure regulator has a vac nipple on it, not to be confused with the Pulsation dampner.
Some people get confused when they drop Jspecs in because the fuel lines are reversed on them. So I can't tell you if you should have the fuel going into the secondaries or primaries. Just look at the position of the FPR.
Pump-----> Fuel Rail----> Fuel Rail ----> FPR (Last) ----> Return line
The Fuel pressure regulator has a vac nipple on it, not to be confused with the Pulsation dampner.
Last edited by Silverfc88; 02-10-07 at 04:42 PM.
02-10-07, 04:41 PM
#3
Banzai Racing
The fuel enters the primary rail, from the fuel filter, the pressure regulator is on the end of the secondary rail, near the firewall. A N/A rail will not bolt onto a TII LIM.
02-10-07, 04:59 PM
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The Shogun of Harlem
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I see... so my fuel lines must be reversed.
My FPR is on the secondary fuel rail facing towards the firewall. Fuel was trying to go into the FPR, into the secondary fuel rail, then down to the primary fuel rail. Thanks for the info guys.
My FPR is on the secondary fuel rail facing towards the firewall. Fuel was trying to go into the FPR, into the secondary fuel rail, then down to the primary fuel rail. Thanks for the info guys.
02-10-07, 05:14 PM
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Originally Posted by 95nracer
Some people get confused when they drop Jspecs in because the fuel lines are reversed on them. So I can't tell you if you should have the fuel going into the secondaries or primaries. Just look at the position of the FPR.
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02-11-07, 04:06 AM
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Originally Posted by dwb87
This is true?
On any engine, the FPR is alway the last thing before the return line to the tank. If you connect the supply and return lines the wrong way around the FPR will act like a check valve and prevent fuel from flowing.
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