Its probably the fuel pump itself. Good time to change the filter too.
|
Originally Posted by DevilMotorSports' date='May 27 2004, 07:22 PM
When you turn the key to 'on' you can hear the fuel pump prime, but the FPR won't hold the pressure. It goes up to 40lbs but drops to 0 with in 5 seconds. If you crank the car the pressure will stay steady but when you stop cranking it, it drops to 0 again.
You have another problem , if you have fuel pressure then what you need to look for is your spark (there could be two problems which cause the "lack of spark" , bad coil / wire or no ignition pick up signal to the Haltech) it can even be bad plugs , you just have to check over everything, most times its something very simple. https://www.nopistons.com/forums/pub...DIR#>/wink.png |
the FPR is susposed to hold pressure after the system is primed and according to the paper work that came with my Aeromotive it should hold pressure for up to 20 minutes once the system is primed. The problem is that my fuel system isn't holding pressure at all.
Its not that the car won't start, it will, but you have to really pump the gas. Once you get the car started it will not idle unless you've got your foot on the gas. I'd imagine this is do to the lack of fuel pressure. The plugs, coils, and CAS are all fine and working properly. |
Originally Posted by DevilMotorSports' date='Jun 1 2004, 04:12 PM
the FPR is susposed to hold pressure after the system is primed and according to the paper work that came with my Aeromotive it should hold pressure for up to 20 minutes once the system is primed. The problem is that my fuel system isn't holding pressure at all.
Its not that the car won't start, it will, but you have to really pump the gas. Once you get the car started it will not idle unless you've got your foot on the gas. I'd imagine this is do to the lack of fuel pressure. The plugs, coils, and CAS are all fine and working properly. |
Is the pump stock? Maybe you ruptured the line in the tank? My wouldn't start for a while because the fuel pumps were swelling the lines in the tank.. Once I put in the SS Braided line, all was good.
https://www.nopistons.com/forums/pub...#>/biggrin.png |
Originally Posted by DevilMotorSports' date='Jun 1 2004, 04:12 PM
the FPR is susposed to hold pressure after the system is primed and according to the paper work that came with my Aeromotive it should hold pressure for up to 20 minutes once the system is primed. The problem is that my fuel system isn't holding pressure at all.
|
i was sitting in the parking lot messing with my haltech maps when the started acting up.
Right now I'm running a stock FD pump, as soon as I get a day off I'm going to go swap it out for my old TII pump. |
Now you're saying something differently ......., once you mess with your maps and you screw them up , you would be fouling plugs , hard starting and having idle problems , pull your plugs and check them .
|
His plugs did have lots of gas on them since it's running so rich. That's why we thought it could be a stuck injector. We should know more tomorrow afternoon when we try it with the new pump.
|
OK then , but let us know what happened. Just fwiw , I tried tuning my Haltech for about a year using only a narrow band a/f ratio meter and needless to say I was unsusessfull, one thing I learned though is that the motor is VERY particular with the ratios durind starting and idle , and the plugs foul very easily without an ignition amp. , I kept about four sets of plugs so that I could just swap them out quickly. i Don't think its your pump , once you are getting 30+ psi then its working . Presently my pumps and regulator works exactly like that , after the initial prime the pressure goes back to 0 , when I tumble to start it , it goes back to the preset 39-40 psi.
|
All times are GMT -5. The time now is 01:26 AM. |
© 2024 MH Sub I, LLC dba Internet Brands