Question about 1997 Ford F150 Regular Cab

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Cangeing spark plugs on a 1997 ford e-150 witha 5.4 does the fuel rail have to be removed

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Yes, there is so much stuff to remove to get to the plugs on these motors!!! I guess it's Ford's better ideas.

Posted on May 09, 2010


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Changing spark plugs

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Install spark plugs does the fuel rail have to be removed? if so how do you remove fuel rail

hi not normally , all that you normally do to replace the spark plugs is take the HT leads off the old ones, be sure to do this one at a time and not all together as you may loose the firing order, but, no there is no need to remove the the fuel rail...hope this helped

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What engine? It is attached to the fuel rail.

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88 f 15- wont start have change coil, rotor, cap, plugs, fuel pumps, computer been working to get truck going 4 days no luck.

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1 Answer

Changing spark plugs

Changing the spark plugs on a 1997 Ford Expedition 5.4L engine takes patience. Remember to start this project on a cold engine! I started on the passenger side by locating the Coil over iginition coils and cleaned out all the old dirt using some compressed air. Then I had to disconnect the electrical connections to both the Coil over ignition coils and the passenger side fuel injectors. Once you remove the small bolt which holds the ignition coil in place, use your compressed air again to blow out the spark plug hole. After that, you will need a 5/8" swivel spark plug socket and various length extensions to remove the spark plugs. Take your time because there is not much room for your hands. Before installing the new plug, check the gap and use clean engine oil on the new threads. Tighten the new spark plug and reinstall the coil over ignition coil. Reconnect the electrical connection to both the ignition coil and the fuel injector. Continue these steps with all eight spark plugs. You will find the ones on the drivers side are difficult because of the fuel rail gets in your way. Have patience and use swivel extensions to work around the tight spaces. When you are done, you will have saved lots of money! Don't forget to replace your air filter, fuel filter, and pcv valve to complete your tune up.

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1 Answer


Replace the spark plugs and filters. Not much there to do. But, it will take a while to change the spark plugs. You have to unplug and remove the coils one at a time and remove the plugs and re-install. Now 7 of them isn't too bad to do. The one that is going to take a while is the last one on the pass side rear next to firewall. Remove the fuel rails carefully. Remove the coil pack and you'll have to literally replace the plug by Braille. Use an extension with a 5/8 plug socket and "feel" for the plug and remove. I get it loose and use a magnate to remove the plug. Do the reverse for installation. This whole process will tak 4 hours or so.

Jun 18, 2008 | 2005 Ford F-150

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