Announcement

Collapse
No announcement yet.

Fuel system problems

Collapse
X
Collapse
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous Next
  • #1

    Fuel system problems

    Fuel pump does not run with key on. No fuel pressure in the rail.
    Fuel pump does not run when starting the car.
    Start car with starting fluid, release key, engine will run but not idle until thoroughly warmed up.
    Car is hard to accelerate and tends to backfire if throttle opened too quickly.

    Quite a list of symptoms!

    Ideas or suggestions?

    Thanks,

    Tom
    Tags: None
  • #2
    What is the year / make / model?

    Comment

    • #3
      Vehicle data

      1993 A4, 145k miles, original everything except water pump.

      Comment

      • #4
        So.... no pressure when cranking, won't start unless starting fluid used, What is the fuel pressure and volume that it pumps when running?

        Comment

        • #5
          If the pressure is weak, im gonna say pump. If the pressure is good, im gonna say relay, because I have seen this on other cars before (but im not too sure how they wire it on the f-bods).
          96 WS6 Formula: Ram Air, 383 Stroker, Ported LT4 Heads and Manifold, 1.6 Crane Rollers, 58MM T.B., AS&M Headers, Borla Exhaust, Meziere Elec. H2O Pump, Canton Deep Sump Oil Pan, 100 HP OF TNT N2O!! , T56 Conversion w/ Pro 5.0 shifter, SPEC Stage 3 Clutch, Hotchkiss Subframe Conn., Lakewood Adj. Panhard Bar, Spohn Adj. LCA's, BMR Adj. T.A., Custom 12 bolt w/ 3:73's, Moser Axles, Eaton Posi, Moser Girdle
          11.6 @ 123mph (1.6 60' - getting there )

          Comment

          • #6
            I'd have to say relay and/or BATTERY...after starting with starting fluid, you're getting voltage from the alternator, have you tried to fire it up using jumper cables etc.???

            Flash - '97 Black WS/6, Intercooled Powerdyne 11# , LTCC Coil Per Cylinder Ignition, OPTI High Voltage Deleted, 160, Short Stick, BMR-STB, adjustable Shocks, PP+ w/scan, !CAGS, Flowmaster 3" cat-back... 43k miles as of Aug. 2006

            **-** BOOST, it's no replacement for displacement, and there's definitely no replacement for having both!

            Comment

            • #7
              Originally posted by Flash 97 WS/6
              I'd have to say relay and/or BATTERY...after starting with starting fluid, you're getting voltage from the alternator, have you tried to fire it up using jumper cables etc.???
              If it cranks well, shouldn't we assume the battery is ok?

              Comment

              Previous Next
              Working...
              X