fuel inj. problems

Discussion in '40- & 55-Series Tech' started by archie, May 7, 2003.

  1. archie

    archie

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    I have a non-cruiser related problem with my fuel injector on a 91 Mercury Tracer with 93k. I am not getting any fuel into the cylinders 1 and 4 even when trying to flood it. I am getting fuel into the other 2 and 3(center). What is the probability that it is a clogged injector or and electronic problem? Haven't checked for fuel pressure but I assume that if 2 cylinder get fuel there should be no problem. I do know that it is getting pressurized (fuel pours out when starting when lines disconnected). Before I send the injectors out for cleaning do you think it might be electronic related because two cylinders are not recieving fuel? thanks for the input.(88 fj62 w 201k will probably need inj. cleaning also.)
     
  2. Gumby

    Gumby Supamod Staff Member s-Moderator

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    You need a noid tester to see if the injectors are getting a signal from the PCM to fire. You could switch the injectors and see if the problem moves.
    How are you trying to flood the cylinders? About the only way I can think of off the top of my head is to pull the ECT to make the car think it's really cold.
    Does the Tracer have the 1.9L? If so, I have a parts car that just came in. You're welcome to the injectors and PCM if you want.
     
  3. archie

    archie

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    What luck finding somebody in the Chicago area that has the exact car that's a cruiser fan. It is a 1.9 and I will try swapping injectors before sending them out for cleaning( great idea). I tried flooding the engine by stomping the accelerator a few times while trying to start it(I think it possible even with fuel inj??). The engine wants to turn over only when I try to start it for the very first time but after that only cranks and sparks. How did you get the parts car?
     
  4. Yoda

    Yoda

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    Some injected vehicles fire their injectors in pairs. Example 1 and 4 fire at the same time, and 2 and 3 fire at the same time. If this is the case with yours (I think my old 89 escort GT 1.9 was this way) it could be the PCM or a common wire to the (2) injectors. I no longer have the book for that car so I can't look it up. The fuel rail is common to all injectors, so pressure to 1 = pressure to all. Check your fuses too. Each set of injectors may have its own fuse. The suggestion of a "noid" light is good. They are less than $10, and tell if the signal is good to the injectors (flashing LED that plugs into injector harness)
     
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