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05-27-2003, 01:50 PM | #21 | ||||
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Thanks for the kind words. Take care, ~Chris
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05-27-2003, 01:52 PM | #22 | |
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Thanks though. Take care, ~Chris
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05-27-2003, 02:53 PM | #23 |
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No problem! You are the man as for as I'm concerned and anybody who thinks different can talk to me
So is the best approach at this point to replace the regulator? I found an aeromotive version that'll work and provided my credit isn't maxxed (this stuff isn't cheap as you well know) I can get one here tomorrow. Since it's old I am going to pray that it's the source of the problem. If the answer is yes to the above question what's the best approach to relieving fuel pressure? I imagine that I can't just go unscrewing the AN fittings :-) .......or can I becuase the regulator isn't holding pressure anyway?
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Red 1993 GT Street Machine Best E.T. - 12.41/Best MPH = 108 Engine is a 1969 351 block w/393 stroker kit. Dynamic Roller Myte C4, 8 pt cage. Edlebrock Performer heads and Victor Jr. EFI, FRPP 30lb injectors & Cartech fuel system. MSD ignition. Sothside Machine bars & Sub-frames, adj. upper's, 3.73's, Koni rear shocks, much more |
05-27-2003, 07:47 PM | #24 |
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Well, I called Summit and they have one in stock but they said "once you run fuel through it, it's yours so you better be 100% sure of what the problem is." I guess I better make sure that it's the regulator before I order. Should I check for a stuck injector (is that even possible after only 800 miles??), or are you confident that from the information I've provided it's the regulator?? If I should check for the stuck injector, what's the procedure? Same for the fuel pump. I better check all the possibilities before I start ordering parts.
Thanks
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Red 1993 GT Street Machine Best E.T. - 12.41/Best MPH = 108 Engine is a 1969 351 block w/393 stroker kit. Dynamic Roller Myte C4, 8 pt cage. Edlebrock Performer heads and Victor Jr. EFI, FRPP 30lb injectors & Cartech fuel system. MSD ignition. Sothside Machine bars & Sub-frames, adj. upper's, 3.73's, Koni rear shocks, much more |
05-28-2003, 04:17 PM | #25 |
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A stuck injector wouldn't be able to relieve 40psi in 1 second. The only other possibillity is the pump, or part of the line in the tank being cracked. Follow the return line going from the regulator to the tank, and locate a section that doesn't have steel braid. Turn on the key, and have someone clamp some visegrips on that part of the hose, then turn off the key. Turn it on again, and after a second, turn it off again. If your pressure holds, it's the regulator.
If you can't locate a section of the line to clamp, then you are going to have to do it differently. You will have to make your own tool. You will need a replacement fuel filter. When you have one, remove your old one, and cut off the tubes that go in and out of the filter, clean up the cut ends with a file, and clamp a piece of fuel line over the ends, so that it is the same length as your new filter (in other words, you are substituting a piece of hose for your filter). Have someone turn the key on and off a couple times, and then when it's on, clamp a pair of visegrips on the rubber hoe you just installed. Turn the key off, and check the pressure. If the pressure is holding, then the problem is in the tank, and is either the pump or a cracked line to the pump. If the presure goes right to zero, it's the regulator.
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05-29-2003, 10:01 AM | #26 |
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Chris,
You won't believe this. I contacted the Aeromotive tech dep't yesterday as they are the manufacturers of the Cartech line of fuel systems. They said that there is no check valve in these systems as they aren't designed for street use. They also said the regulator wasn't designed to maintain pressure. I had him listen to the pump itself (which he said is upposed to run loud)and we walked through doing a vac test on the car (which ended fluctuating at 10-12 inches....is this bad or good?) and he asked me what type of pressure gauge I had. I told him it was a liquid filled Jegs mech gauge and he started chuckling. HE explained to me how he's been receiving at least 12 calls weekly on these gauges. He asked me to put a hair dryer to the gauge and you won't believe what I found! I had the car running and I cranked the dryer on the gauge and the f%&^ing pressure dropped to 30 psi!! I then took a bad of ice and placed in around the gauge and it increased to 40 psi!! Can you believe it!?? I paid like 40 bucks for this shitty gauge and it almost cost me a 1000.00 fuel system, as I was considering purchasing a new system. I guess maybe that's why she wasn't leaning out.....makes sense now. The pressure is maintaining but it's the blasted gauge that's at fault. What do you think?? I think I found the problem.
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Red 1993 GT Street Machine Best E.T. - 12.41/Best MPH = 108 Engine is a 1969 351 block w/393 stroker kit. Dynamic Roller Myte C4, 8 pt cage. Edlebrock Performer heads and Victor Jr. EFI, FRPP 30lb injectors & Cartech fuel system. MSD ignition. Sothside Machine bars & Sub-frames, adj. upper's, 3.73's, Koni rear shocks, much more |
05-29-2003, 04:30 PM | #27 |
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Hey guys got a question for you, the vaccum on my Regulator, when i have it disconnected the car seems to run at a better idle and when i hook it back up it sound like i have a big cam, the idle goes up and down, Is it okay to take the vaccum off and plug it or do i have a problem with something. thanks alot.
Ernie
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93 GT 351 to 393 stroker, GT40 upper and lower intake, GT40X Turbo Swirl heads, holley 80mm throttle body, 255 fuel pump, 42 lb injector, JE pistons, Comp cam, comp lifters, comp pushrods, comp springs, crane Roller rockers. Trick flow Crank Shaft, comp Timing chain. MSD 7 series ignition, msd hvc2 coil, MSD timing adjust, MSD Pro billet Dis, Hooker long tube, Off road H pipe 1 chanber race flows, 4.10 gears, Vortech cooler and T-Trim with a 25lb boost AND LOTS MORE. |
05-29-2003, 04:38 PM | #28 |
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When you unplug it your engine gets more fuel and it sounds like it likes it. You need to turn your fuel pressure up a little and reconnect the hose.
Usually if you run without the vacuum hose attached you will run rich at an idle and at low RPM's.
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92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer |
05-29-2003, 04:41 PM | #29 |
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BTW: killer set-up.......I bet it hauls some major @ss.
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92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer |
05-29-2003, 04:44 PM | #30 |
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Location: NJ
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It sure does
it is just this pain in the a** 86 gt i have with the fuel problem, so is it okay to keep the line off and how do i adjust a stock regluator, if you even can. thanks man
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93 GT 351 to 393 stroker, GT40 upper and lower intake, GT40X Turbo Swirl heads, holley 80mm throttle body, 255 fuel pump, 42 lb injector, JE pistons, Comp cam, comp lifters, comp pushrods, comp springs, crane Roller rockers. Trick flow Crank Shaft, comp Timing chain. MSD 7 series ignition, msd hvc2 coil, MSD timing adjust, MSD Pro billet Dis, Hooker long tube, Off road H pipe 1 chanber race flows, 4.10 gears, Vortech cooler and T-Trim with a 25lb boost AND LOTS MORE. |
05-30-2003, 08:20 AM | #31 | |
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Quote:
Take care, ~Chris
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Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local
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