Difficult to start engine in Eldorado 1983
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HT4100 4.1, 4.5, 4.9 Discussion, Difficult to start engine in Eldorado 1983 in Cadillac Engine Technical Discussion; Dear friends over there I have a Eldorado 1983 with 4.1 L engine, the engine is very difficult to run ...
  1. #1
    joivill is offline Cadillac Owners Member
    Automobile(s): Fleetwood 1976 , Eldorado 1983, DeVille 1997
    Join Date
    Apr 2010
    Age
    59
    Posts
    35

    Difficult to start engine in Eldorado 1983

    Dear friends over there I have a Eldorado 1983 with 4.1 L engine, the engine is very difficult to run I have to start several time so the engine will go.
    I have a new fuel pump in the tank (Delco) and last thing I do was changin the injector valve I find them in USA and put the in last week. But the engine not change so much.
    same problem, starting long time to turn the engine on, do someone have some solution ore something I have to check .
    Thanks Johann Vilhjalmsson in Iceland

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  3. #2
    joivill is offline Cadillac Owners Member
    Automobile(s): Fleetwood 1976 , Eldorado 1983, DeVille 1997
    Join Date
    Apr 2010
    Age
    59
    Posts
    35

    Re: Difficult to start engine in Eldorado 1983

    Not so many answer here, but now I find out that, that when I swish electric on the fuel pump in the tank give no presure on the fuel line, the pump is new, so T thin it is some electric problem,
    can some one name some realey ore swish on the electric line?

    Thanks Johann Vilhjalmsson

  4. #3
    carnut is offline Cadillac Owners Master
    Automobile(s): 1988 Allante' (sold), 1984 Eldorado, 84 Sedan DeVille
    Join Date
    Feb 2003
    Location
    california
    Age
    67
    Posts
    5,733

    Re: Difficult to start engine in Eldorado 1983

    If the oil pressure switch is either faulty or disconnected, you will not get voltage to the fuel pump. To verify the pump is working, you should see 2 sprays of fuel coming from the 2 injectors in the throttle body while you have someone crank over the engine. Check to make sure the oil pressure sender wiring connection is on fully and clean.

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