seasprite Posted August 11, 2013 Report Posted August 11, 2013 I just changed out my spark plugs on my 05 F150 with the 5.4. For those of you that are in the know this is my second time changing my plugs on this motor, did the first time at 35k and this time at 115k miles. Was starting to get an intermittent miss so I figured it was time. Since this is an 05 I decided to replace 7 of my injectors as well (1 replaced under warranty) and cleaned the throttle body at the same time. The injectors had to be replaced because Fords supplier sent them a bunch of bad ones so Ford extended the warranty to 120k miles instead of stepping up and just replacing them. The truck runs like its brand new now. For those of who don't know Ford had a spark plug issue with the 2004-2008 5.4 3 valve motor where the plug could separate and part of it would stay stuck in the head witch would cause you to buy a special extraction tool to remove the stuck part. The lower electrode part with the carbon on would separate from the threaded part.
unforgiven Posted August 11, 2013 Report Posted August 11, 2013 You saved alot of money doing it yourself brother.Had it done to my work car and gas mileage improved big time.
Zebra644 Posted August 12, 2013 Report Posted August 12, 2013 Yep I am at 75 K on my 2005 FX4 F-150 5.4 not looking forward to this
texas30cal Posted August 12, 2013 Report Posted August 12, 2013 Don't loosen them by hand with a ratchet if you get to one that is stuck, hit it with a impact, have a very good friend that is a 25 yr ford mechanic and he swears by this method as he sees these every day. He says he hardly ever breaks one off anymore.
seasprite Posted August 12, 2013 Author Report Posted August 12, 2013 Zebra644, I took my time 6 hours to change them out. I followed the TSB that Ford has out on this and had no problems changing them and Lisle is suppose to have the extraction tool if do break one. Hows your injectors holding up did you ever get the letter stating that they can fail at anytime? I found the replacement injectors on Amazon for $25.00 each witch is a lot better than the $65.00 each that ford wanted. Yep I am at 75 K on my 2005 FX4 F-150 5.4 not looking forward to this Texas, I've heard of that before but I was just to scared to try it. It would of saved a lot of time going that rout. Don't loosen them by hand with a ratchet if you get to one that is stuck, hit it with a impact, have a very good friend that is a 25 yr ford mechanic and he swears by this method as he sees these every day. He says he hardly ever breaks one off anymore.
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