Question about 1989 Ford Crown Victoria

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How do i put a fuel injector in - 1989 Ford Crown Victoria

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  • Anonymous May 11, 2010

    If you have ask,you most likely haven't done this sort of thing before. The most important thing here is.WHY are you changing an injector and what testing have you done to warrant that change. I assume you have a multitude of drivability issues with the engine. Don't throw parts at it.Test

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Try cleaning the injectors... http://fordfuelinjection.com/?p=82 will give a few ideas on how to do a cleaning. Other than a cleaning, you need to be sure that the injectors are receiving the signal to operate, this is tested with a noid light.
Other than that, if you still want to replace the injectors, first relieve fuel system pressure by: 1) Look in the trunk for the fuel pump shut off switch. Turn it off.
2) start the car and let it run and stall out (should not take long)
3) Now the fuel system is depressurized
Now you can go in and begin the removal. 1) remove air intake plenum (on 5.0 it is the metal swept to one side looking thing on top of the engine)
2) remove the fuel rail assembly (you will need fuel line couple tools to make this happen, otherwise trying to improvise one will damage the coupling and give you a fuel leak)
3) Detach the electrical connectors from each injector (be careful and gentile like)
4) Grip the entire fuel injector with one hand and pull while gently rocking it back and forth. Don't yank, use a stern wiggle
5) First check once you get the injector out will be the O-rings, look for deterioration cracks or other signs of boo. (In general, replacing the O-rings is recommended once you have the injector removed)
6) Inspect the injector for signs of wear, and deterioration or breakage (if broken, you may want to investigate your manifold for the offending pieces)
Reinstall: 1) Lubricate the O-rings (use light oil only...no grease/silicone, they will clog the injector)
2) Lightly twist the injectors into place.
3) replace the previously removed parts
Tips: Recommend using a digital camera before and during your procedure. That way you have a photo reference of what things looked like before they were disassembled as well as what the progress was like, and you can refer to your own photo guide as you work.

Posted on Nov 19, 2010

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Posted on Jan 02, 2017

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03 3.7 have new o rings for bottom of injectors do you put it on the head first or on the injector just put head gaskets on jeep


old post but see it asked many times.
assemble the rail first, its 1 piece so must be ready first.
3.7L Engine (FSM) RTM?
(1) If fuel injectors are to be installed, refer to Fuel
Injector Removal/Installation.
(2) Clean out fuel injector machined bores in
intake manifold.
(3) Apply a small amount of engine oil to each fuel
injector o-ring. This will help in fuel rail installation.
(4) Position fuel rail/fuel injector assembly to
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(5) Guide each injector into cylinder head. Be careful
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(6) Push right side of fuel rail down until fuel
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Push left fuel rail down until injectors have bottomed
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(7) Install 4 fuel rail mounting bolts and tighten.
Refer to torque specifications.
(8) Install 6 ignition coils. Refer to Ignition Coil
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(9) Connect electrical connectors to throttle body.
(10) Connect electrical connectors at all fuel injectors.
To install connector, refer to (Fig. 37). Push connector
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I have a 1997 dodge grand caravan 3.8l v6 with about 146k. I stopped at a gas station and put gas in it (was at 1/2 tank) Went to start it and it started hard. Cranked for about 4 seconds before turning...


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emove the six reverse torx bolts from the fuel rail using an E7 star socket. You may notice that the paper fuel rail gasket is starting to or maybe already has broken between the intake ports. This will cause a lean code condition. (P0171 and P0174)
2. Gently pry the fuel rail off of the lower intake and the six injectors. Note the orientation of the injectors beforehand.
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5. Clean the o-ring areas on all the injectors.
6. Put new o-rings on the injectors. A light film of motor oil on the o-rings will help in seating the injectors.
7. Put the injectors into the lower intake.
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9. Put the six reverse torx bolts back in and torque them down in this sequence:
<Firewall 1 3 5
............ 6 4 2
To 12-16 N*m (9-11 lb*ft)

reassembly is the reverse of the dissassembly. after you get this done, get you a cold one. heck get two. you deserve it.

(you can let the children and small animals back in the area now)

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