Question about 1990 Ford F150

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Wont start without starting fluid

1990 F150 straight 6, 4.9 liter. wont start unless starting fluid is sprayed in. it will run, but once shut off it will not start unless starting fluid is resprayed. pump works

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  • Anonymous Sep 04, 2008

    1990 F150 with 351 will not start without starting fluid. No power (12v) to fuel pump relay coil. Relay checks good about 64 ohms resistance. EEC relay powers up properly.

  • Anonymous Mar 27, 2014

    then runs good, starts wen it is hot. have new gloplugs and they woork,

  • Anonymous Mar 31, 2014

    runs fine when lifted 2 inches but shuts off right when let down

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Could it be a plug up injector , have sewiing needle , stick it in the sprayer part of the injector on the carberator part

Posted on Sep 16, 2008

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Chances are its an ignition problem if nothing happened by using starting fluid. Have you pulled the plug wires and checked for spark ?

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Hi spray starting fluid into the intake, if it starts you have a fuel problem, if not then you have a spark problem PS. be sure to hold your gas pedal down to allow the starting fluid into the motor

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Sounds like one of your chambers isn't firing. Run your car for a few minutes, shut it off then pull your plugs one at a time and see if one of them is wet. Might just need a new plug.

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4.9 liter will idle but wont accelerate have to start with ether


yes checked fuel pressure and replaced the fuel filter, checked the mapp sensor,tested throttle position sensor, has strong spark, 50psi fuel pressure, fresh tune up, runs real rich and rough idle but wont rev up like fuel injectors arent speeding up, also checked exhaust. thanks julius

Oct 09, 2008 | 1990 Ford F150

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First try to step on gas about one quarter throttle then try to start.If it starts like that I would change the Idle Air Control valve.

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2 Answers

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Sounds like a clog somewhere.

Jul 21, 2008 | 1990 Ford F150

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