questions for those with KG parts fuel system.
#1
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questions for those with KG parts fuel system.
I finally got my fuel pump to work, turned out to be the fuse under the dash. looked fine but no worky. so now I am trying to get some fuel pressure happening in the new system, but no luck yet. I turn the key on, hear the pump prime, and quickly check the fuel pressure gauge, and see it quickly returning to zero from an unknown pressure. here are some questions:
1) Regarding the Aeromotive FPR, how long after the fuel pump shuts off should you see pressure in the gauge? for me it's 1.5-2 seconds, and that doesn't sound right to me.
2) on the set screw (pressure adjustment on top of the FPR unit) about how far screwed in should it be to get roughly 35 psi? I have mine almost flush with the lock nut right now, so can't increase pressure much more.
I have the KG parts secondary fuel rail also, and I'm not sure about the fittings that go into it. They are the type where the threads crush down to form a seal when you install them, and they say to not use thread sealant. I went about as tight as I dared before they felt like they might strip out, but that wasn't very many turns in. has anyone had problems with these before? the only thing that could be a leak came from these fittings. nothing real noticeable, but a thin layer of fuel was on the ends of the rail. I really don't think it's enough of a leak to cause me to lose fuel pressure that fast.
let me know your thoughts, thanks.
1) Regarding the Aeromotive FPR, how long after the fuel pump shuts off should you see pressure in the gauge? for me it's 1.5-2 seconds, and that doesn't sound right to me.
2) on the set screw (pressure adjustment on top of the FPR unit) about how far screwed in should it be to get roughly 35 psi? I have mine almost flush with the lock nut right now, so can't increase pressure much more.
I have the KG parts secondary fuel rail also, and I'm not sure about the fittings that go into it. They are the type where the threads crush down to form a seal when you install them, and they say to not use thread sealant. I went about as tight as I dared before they felt like they might strip out, but that wasn't very many turns in. has anyone had problems with these before? the only thing that could be a leak came from these fittings. nothing real noticeable, but a thin layer of fuel was on the ends of the rail. I really don't think it's enough of a leak to cause me to lose fuel pressure that fast.
let me know your thoughts, thanks.
#2
Lives on the Forum
I finally got my fuel pump to work, turned out to be the fuse under the dash. looked fine but no worky. so now I am trying to get some fuel pressure happening in the new system, but no luck yet. I turn the key on, hear the pump prime, and quickly check the fuel pressure gauge, and see it quickly returning to zero from an unknown pressure. here are some questions:
1) Regarding the Aeromotive FPR, how long after the fuel pump shuts off should you see pressure in the gauge? for me it's 1.5-2 seconds, and that doesn't sound right to me.
1) Regarding the Aeromotive FPR, how long after the fuel pump shuts off should you see pressure in the gauge? for me it's 1.5-2 seconds, and that doesn't sound right to me.
I have the KGparts secondary fuel rail also, and I'm not sure about the fittings that go into it. They are the type where the threads crush down to form a seal when you install them, and they say to not use thread sealant. I went about as tight as I dared before they felt like they might strip out, but that wasn't very many turns in.
has anyone had problems with these before? the only thing that could be a leak came from these fittings. nothing real noticeable, but a thin layer of fuel was on the ends of the rail. I really don't think it's enough of a leak to cause me to lose fuel pressure that fast.
-KG
#4
Big Snail
^ If I recall correctly the Walbro I used to run back in the day held pressure after shutoff. You might want to pull your pump assembly and check the pump outlet to make sure its nice and snug. I also believe there is a small plastic washer/o-ring that is mounted to the top of the pump out let to insure a good seal. If the seal isn't good your fuel pressure will bleed off rapidly, thats bad thing when under boost.
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