Question about 1993 Mercury Capri

5 Answers

I have a 1993 mercury capri ...that will not start unless I pour gas directly in the spark plug holes....the injectors are getting pulse and gettng spark at the coil...already put new fuel pump...what could be the problem? also tried to bypass main relay to injectors and still will not crank..no gas is getting to the plugs

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  • Leon Watson Aug 11, 2011

    this is not a sufficient asnswer I'm already getting spark and car will crank if I pour gas
    in each spark plug the problem can't be the coil

  • Leon Watson Aug 11, 2011

    all that was replace when I put new fuel pumb and strainer on the car...

    but I notice that only one wire leading to injectors have voltage and this is the black and white wire, the yellow wire has no voltage... but all are pulsing...could this be the problem and does it mean the EMC is bad?

    Leon

  • Leon Watson Aug 16, 2011

    the car cranks and runs when I pour gas in the plugs until I shut it off then it will not start until I pour more gas in the plug holes
    the fuel pressure is 40-45psi and regulator is
    holding at 40psi when not running...so it's not the pressure regulator nor the fuel pump.
    the injector are pulsing fine when running but
    are they suppose to pulse doing cranking and are both wires to the injector suppose to have 12volts at the same time?

  • Leon Watson Aug 16, 2011

    no no no the car runs fine when I crank it by pour a little gas in the plug holes the put plugs back in,
    something is not allowing the injectors to pulse on initial start ...and pressure is fine and holding at the rail..40psi holding when car is off. you can hear the injector pulsating when car is running.
    what makes the injectors pulse when initial start up...all are getting signal I use the noid test light.

  • Leon Watson Aug 20, 2011

    not happy with your solution ...

    Leon

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  • Mercury Master
  • 17,970 Answers

You are going to want to check all inputs to the main relay, when this happens. It might just be bad. With the key in ON position, you should have three powers and one ground.
If all three powers and one ground are present and the relay is not energizing, the relay is bad and will need to be replaced.

Other possibilitie, in this point could be the Inertia Switch which does not give a warning,.other component problems usually register in your onboard computer and turn on your "check engine" light on the dash. This Inertia Switch (also called Shut Off Fuel Pump switch) may have shut off power to your fuel pump. It may be on the side of the trunk beneath the carpet or under a kickpanel by your feet. The part has a button which needs to be pushed to reset it (hold button three seconds and you should be good).

Keep us updated.

Posted on Aug 16, 2011

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  • Master
  • 1,386 Answers

Hello and welcome to FixYa!
It should be working by now for you have good pulse in the injectors plus the fuel pump is new. I suspect that the fuel tank and line is clogged with dirt and rust. I suggest that you drain out the fuel to get rid of the clog then try to fill her up with new fuel.
Hope this helps and thank you for using FixYa! Have a good one!

Posted on Aug 16, 2011

  • afarri
    afarri Aug 16, 2011

    If you happen to know someone who has an ECM engine control module then try a swap. This can make a change.

  • afarri
    afarri Aug 20, 2011

    How's it going sir?

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  • Mercury Master
  • 3,018 Answers

  • Your injectors sound like they are good. You are getting a desired response from pouring fuel into the cylinders. Your injectors are pulsing fine. So the problem is the fuel is not reaching the fuel fail.
  • I would be willing to bet you have a loss of fuel pressure.
  • Your fuel pump even though new could be defective. It holds pressure around 45-50 PSI even with the car off.
  • The other thing this could be is a fuel filter. Sound to simple to be true? I see it all the time. The fuel filter and the fuel filter both work to maintain pressure. If either fail the car will not start.
  • Make sure the new pump is operating proper and replace your fuel filter.
  • Your fuel filter is under the hood.
  • Here is an informational page on that as well. http://perrya.hubpages.com/hub/How-to-Change-the-Fuel-Filter-in-a-1991-94-Mercury-Capri

  • Hope this helps and thank you for using FixYa

Regards, Tony

Posted on Aug 11, 2011

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  • Mercury Master
  • 1,105 Answers

Is this vehicle has a distibutor if so then change the ignitor/coil.

Posted on Aug 11, 2011

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  • Master
  • 1,586 Answers

Change your fuel filter - enough clogging can prevent fuel flow, and it sounds like you have a fuel delivery problem rather than an issue with the injectors firing. The other culprit would be the fuel pressure regulator. That's what will allow line pressure to be sufficient for the engine to run. Either a failed regulator or a broken vacuum reference line to the regulator would cause that.

Posted on Aug 11, 2011

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