Question about 1989 Ford Crown Victoria
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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