Question about 2005 Ford F-150

2 Answers

Broken spark plug in the head on a 2005 Ford F-150 5.4L

What do you recommend for changing the spark plugs without breaking one? I have a 2005 Ford F-150 with a 5.4L and I've been told that the rear spark plug can break off in the head.It only has 40,000 miles on it but I want to avoid any problems in the future

Posted by on

  • 1 more comment 
  • mustang7mike May 12, 2009

    Thanks for informing me about reading the owners manual.It doesn't say anything in there about removing broken spark plugs when it reaches 100K. I have heard horror stories about waiting to change plugs at 100K and they break off in the head because of a poor design in the head and it could cost 2-3 thousand to repair.I heard the plugs should be removed at 30 -40K and be coated with never seize to prevent a problem in the future.Thanks for your help anyway.I think I know what to do from here on.

  • Marvin
    Marvin May 11, 2010

    I work in a Ford dealer never had any problem removing plugs. do u have igh quality tools, make sure the socket is well seated onto the plug base. It is not a faulty design, this is a great engine in every way.

  • Marvin
    Marvin May 11, 2010

    in the 1st place the plugs don't need to be replaced until 100,000 miles, so u have given yourself a big headache over a service that wasn't needed, do u read the owners manual?



2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I also work at a dealer, and it is a poor design. carbon biulds up on the extension of plug and you cant get out.Have a broken plug in front of me as i speak. Change plugs at 40 k or you will pay!!!

Posted on Jun 10, 2009


  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has answered 20 questions.

  • Expert
  • 38 Answers

Typically when you break a spark plug, it is the ceramic portion that breaks. the bit left in the engine would still be removable. if your worried, just spray a little bit of wd40 on the plug and let it sit for a few minutes. they should come out alright... just take care not to break the new ones on installation

Posted on May 11, 2009


1 Suggested Answer


6ya staff

  • 2 Answers


Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

3 Answers

Is there a way to change the spark plugs in a 5.4 without the danger of breaking them in the head? I understand it is a carbon buildup on the plugs in the com. chamber

Trust me, no matter what you do, the danger exists. Ford says to crack the plugs loose not mere than 1/4 turn and spray penetrating oil into the spark plug holes and let it soak for at least an hour. Then, carefully work the plug back and forth until it comes out. The problem that I have experienced is that the cracking 1/4 turn is what breaks the "blankety-blank" things. Once they are broken, you are done without the special tools needed to extract the thread part of the plug, then go fishing for the lower end which just fell down into the cylinder. This is definitely one of Fords WORST ideas.
I highly recommend that you do not try this at home!

Feb 01, 2011 | 2004 Ford F150

1 Answer

I wanted to know what type of services I need done to my 2005 ford focus to keep it in good running condition.

Most of the dealers recommend Scheduled Maintenance Services at 30K, 60K, and 90K.
At 60K the coolant has to be replaced with a new one, to avoid a corroded radiator or partially clodged heater core. Radiator Flush. The air filter.The spark plugs has to be replaced with the original OEM. The transmission oil starts breaking at 30000 miles and has to be changed at 60K. This is the best insurance for the transmission of your car. It is optional but, it is recommended to flush the breaking system too. This protect the ABS system from corrosion. Do not forget to replace brake bleeding nipples with new one. They are cheap, and avoid costly problems in the future.
The EGR valve has to be inspected.
The last and most expensive service is the timing belt change between 60000miles to 100000miles.

Nov 04, 2010 | 2005 Ford Focus

2 Answers

When do spark plugs need changing

Ford recommends 100,000 miles on the original plugs. That is ok to do as long as it isn't missing or giving you any indication that they need changing. I hope this helps.

Mar 21, 2010 | 2005 Ford Focus

1 Answer

What is my maintenence schedule ?

I woud replace the fluids,including the brake fluid. Be sure to use the correct fluids, follow the FORD specs. Yes the spark plugs are a big issue. Be sure the mechanic knows what he's doing, if not, have the Ford dealer replce them, Special tools are involved because the end of the spark plugs break off in the head and they will need to be removed. Expect to pay BIG BUCKS. This alone is the reason I will never own a Ford Truck.

Dec 18, 2009 | 2006 Ford F-150

1 Answer

Changing rear spark plugs

yes you have to take your front motor mount out and come along the motor forward you do not need to take the intake off

Apr 21, 2009 | 2005 Mercury Sable

2 Answers

Is it true you really have to change the spark plugs Ford F150

the recommended mileage is 100,000, how do I know? I am a Ford tech.

Mar 12, 2009 | 2004 Ford F150

1 Answer

Changing Spark plugs 2005 Colorado

what is involved in changing spark plugs and which type is recommended?

Oct 31, 2008 | 2005 Chevrolet Colorado

Not finding what you are looking for?
2005 Ford F-150 Logo

Related Topics:

781 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

85223 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22485 Answers

gerry bissi

Level 3 Expert

4388 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides