I just installed my FPR and return line this weekend. I have hard starts every time and the car hold no pressure, and It stumbles between gears. I checked the stock regulator because I read this before the install. It came off easy, and went back in easy. I did not have to force anything. I am pretty sure this is the problem, as it is exactly what you described. The stock regulater seems to be way to loose in there. The car is actually a challenge to drive.... Thx for a great find, and I will let you know if I am able to fix it.
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GT3076R, and everything to make it work. Full suspension set up. Still looking for more!
Ok, I am now lost. I removed the stock regulator, O-ring was in place, not damaged. I bent the tabs to make it fit tighter. The silly foam o ring thing came off, and does not really sit right, but I left that in there as well. I re-installed everthing, and it fits much tighter. I also zip tied the white tabd to hold them in place. Primed the car....not even 5 seconds until its at Zero pressure again. Tried multiple times. I have no fuel leaks. Car starts hard as usual, rrr, rrr, rrr, rrr, rrrrruuummm. Besides the bottleneck fix, which I don't understand at all by looking at vector's diagram (maybe because I dont understand what it is doing), what else can I do. The car is tough to drive even. Also, I read on here about the slow boy racing how to, and some other how to's on the bottle neck fix. I will do this, just need to know how. Thx guys for your help.
Ok, I am now lost. I removed the stock regulator, O-ring was in place, not damaged. I bent the tabs to make it fit tighter. The silly foam o ring thing came off, and does not really sit right, but I left that in there as well. I re-installed everthing, and it fits much tighter. I also zip tied the white tabd to hold them in place. Primed the car....not even 5 seconds until its at Zero pressure again. Tried multiple times. I have no fuel leaks. Car starts hard as usual, rrr, rrr, rrr, rrr, rrrrruuummm. Besides the bottleneck fix, which I don't understand at all by looking at vector's diagram (maybe because I dont understand what it is doing), what else can I do. The car is tough to drive even. Also, I read on here about the slow boy racing how to, and some other how to's on the bottle neck fix. I will do this, just need to know how. Thx guys for your help.
I want to help further. What is the car doing EXACTLY. what is the pressure with the vac line off? where did you get the vac line from?
I want to help further. What is the car doing EXACTLY. what is the pressure with the vac line off? where did you get the vac line from?
Ok, With the vac line off, I have the pressure set to 40psi. When I turn the key to prime, the pressure goes all the way to 40psi, then drops within seconds back to 0. The car drive just fine, except when I shift, I assume it loses all fuel pressure between shifts. It stumbles initially and then drives fine again, until the next time I shift. It is much more pronounced at lower throttle applications. I have the vac/boost source (wich is shared by many) off of the throttle body. Witht the car running and the vac line removed, it adjusts perfectly and holds perfect pressure. As soon as I turn the car of...0. I am sure I am just losing fuel pressure somewhere, but it does not seem like it is because of the new regulator, at least I dont think it is. I took the car into boost, and full boost, and it worked just fine, I had plenty of fuel. The problem is at start up, and shifts when driving mildly/normally to and from work. It stumbles pretty dang hard to. I had my wife prime the car while I help the stock regulator as hard in the tank as I could=exact problem, almost instant drop to 0. I ensured all the fuel lines where tight.
Last edited by iridefast : 01-30-2007 at 01:43 PM.
Is the filler line from the gas cap to the tank pressurized? If not, I figured I could disconnect the return line from the rail and put the plug back in to see if the problem went away. If it did, then I know the problem is the FPR. If it didn't, maybe it is still the stock regulator. Someone please help me out here. This bolws. I just want to sell the car I am so angry right now.
Ok, I hope this is the problem. I will get some JB waterweld and replug it. Problem is...how the heck to get the plug thats already in there out? That stuff is hard as sh*t. Thx for the reply Redstar. I will let you know if this fixes the problem.
Ok, I hope this is the problem. I will get some JB waterweld and replug it. Problem is...how the heck to get the plug thats already in there out? That stuff is hard as sh*t. Thx for the reply Redstar. I will let you know if this fixes the problem.
Take a very small drill bit and drill holes in the epoxy to lossen it up, and then use a screw driver to get the rest out. Take some carb cleaner and clean it up. Then plug it again and make sure you let it sit for an hour or so. I have seen this problem quite a bit. It is ussually always a stock regulator problem. Doing the bottleneck fix will take care of any stock regulator problems.
well as or right now, I feel like a complete dumb ass. I took out the stock regulator again and compared it to the one in the video you supplied redstar. I was missing the small black o-ring. I had the big blue one, but not the small one. The seal looked pretty damn good in the stock regulator, so I was guessing it was the o-ring. I dug around and found it still in the tank. I put it back on, and tightened everything up even better than before. Primed the car, and low and behold, I am holding pressure perfectly, no vissible drop while I stood there and watched. I took the car out and drove it around...perfect. I hit full boost....well tried to. I had to much fuel now and was drowning out the engine, lol. Now I can actually start to tune again, and enjoy the car. Thx again for standing by me and trying to help redstar. As far as everyone else, sorry about so many posts, lol.
well as or right now, I feel like a complete dumb ass. I took out the stock regulator again and compared it to the one in the video you supplied redstar. I was missing the small black o-ring. I had the big blue one, but not the small one. The seal looked pretty damn good in the stock regulator, so I was guessing it was the o-ring. I dug around and found it still in the tank. I put it back on, and tightened everything up even better than before. Primed the car, and low and behold, I am holding pressure perfectly, no vissible drop while I stood there and watched. I took the car out and drove it around...perfect. I hit full boost....well tried to. I had to much fuel now and was drowning out the engine, lol. Now I can actually start to tune again, and enjoy the car. Thx again for standing by me and trying to help redstar. As far as everyone else, sorry about so many posts, lol.
BAHAHAH I knew it was that damn regulator. Do the bottle neck fix and ull never have to worry about it again.
ok, so after making sure both o-rings were installed, and the stock regulator is nice and tight. The car holds static pressure great. However, I still have occasional loss of pressure while driving. Always occurs at low throttle applications, and usually after shifting, or releasing the throttle for a bit, then re-applying. Will the bottleneck fix remedy this problem? I am so sick of fuel issues. They are driving me mad, ahhhhh.
ok, so after making sure both o-rings were installed, and the stock regulator is nice and tight. The car holds static pressure great. However, I still have occasional loss of pressure while driving. Always occurs at low throttle applications, and usually after shifting, or releasing the throttle for a bit, then re-applying. Will the bottleneck fix remedy this problem? I am so sick of fuel issues. They are driving me mad, ahhhhh.
Do you see the gauge when you reapply the gas? you know for sure that its droping pressure? Just do the bottleneck fix and save your self a headache.
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