Question about 1989 Ford F 250

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Just changed my engine in 1989 ford f250 (351w) now I get fuel to the rails but not thru the injectors

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  • oatreehugger Dec 18, 2008

    Yes Angelo the engine was running till the piston in the no1 cylinder blew apart

  • Angelo Attard
    Angelo Attard May 11, 2010

    OK DO THESE TESTS



    CHECK FOR SPARK ?

    IF U HAVE SPARK REMOVE 2 SPARK PLUGS AND CHECK IF THEY ARE WET WITH FUEL OR SMELL VERY STRONG OF FUEL



    IF WET REPLACE WITH NEW ONES AND TRY AGAIN TO START



    IF THEY ARE DRY PUT SOME FUEL DONE INTAKE AND TRY TO START IF IT STARTS LET ME KNOW AND WE WILL GO TO THE NEXT STEP

  • Angelo Attard
    Angelo Attard May 11, 2010

    was the old engine a runner before u changed it

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Hook up a code reader to see if your ECM is functioning properly. Other possibilities are that your fuel relays are corroded, or a fusible link leading to the relays has blown.

Posted on Sep 22, 2009

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1991 F 250 5.0 was running not now has good pressure at the fuel rails nothing thru injectors


It could be the "Main Relay" or no spark.
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You do not say what year the truck is.. but the ford 5.0-v8 fuel rails very rarly leak.. This is the part that supplies fuel to the injectors. There are rubber o rings that attach the fuel rail to the injectors sometimes these leak.. you can get a O ring seal kit from Rockauto.com at a very reasonable price. The fuel rail can come from the salvage yard.. I have never seen a Ford fuel rail leak except for the O rings. which rarly go bad. If you remove the rail replace all the o rings. use a little lub on the rings to help reassemble. Before you start take pictures of everything in the area you are going to work on. Buy or borrow a Clymer manual for your truck before you start. Good luck.. follow up with a comment and let us know what you find.

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Check out You Tube Video

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Runs for less than a half hour and shuts down. Fuel to the rail but not into injectors.Fuel pump, fuel filter,brain, module, crank sensor, oil pressure sensor have all been changed. Starts again after...


Hello: If this is a 4cylinder engine with the distributor on the back of the engine (toward the passenger compartment) I would rebuild/replace the distributor. Including distributor cap and rotor.

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1 Answer

How to replace fuel injectors


disconnect the battery depressurize the fuel rail from the test port schrader valve unplug the injector clips one at a time marking them from front of engine # 1 - # 6 at rear of engine unbolt the fuel rail from the intake gently wiggle the fuel rail while pulling it up the injectors will stay in the fuel rail undo the clips on the rail holding the injectors to it changing them all greasing the o-rings on top and bottom of injectors install the fuel rail and injectors back on engine plug them in reconnect battery cycle key on and off a few times bleed air out of fuel rail and your done this is for the 4.0 engine as you did not specify what you have . the v8 engine is similar hope this helps

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1 Answer

Replace fuel injector on a 1989 ford crown vic.


they are pressure fit in place. and they are pried out
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1 Answer

My 1989 crx si is not pushin fuel out the fuel ingectors what is my problem


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1 Answer

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Start of with dry gas and injector cleaner now..... and c if you can drive it. next try ur fuel rail it may be gucked up inside.  any service engine lights on?

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1 Answer

1989 Ford Bronco 5.0 engine will not crank. Replaced fuel filter and fuel pump, but still will not start. Engine turns over and will try to crank with starting fluid.


Timing is everything. Try testing you PCM. It's the little gray box near the base of your distributor. If you have spark, and fuel at the rail (plus good fuel rail pressure) than the timing is your problem.

Check the pet-**** on the fuel rail assembly to make sure the fuel at the rail is under presure and getting to your injectors. Then again make sure you have spark, lastly you should be able to test the trouble codes to see if your PCM is the issue.
Goos luck.

Jul 20, 2008 | 1989 Ford Bronco

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