pretty bad
Typical Repair Cost:
Average Mileage:
114,650 miles
Total Complaints:
25 complaints

Most Common Solutions:

  1. not sure (13 reports)
  2. repair or replace heads (4 reports)
  3. replace the head (3 reports)
  4. helicoil insert (2 reports)
  5. new engine (2 reports)
  6. loctite 271 (1 reports)
2008 Ford F-150 engine problems

engine problem

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2008 Ford F-150 Owner Comments (Page 1 of 2)

problem #25

Apr 172019

F-150 STX 4.6L

  • Automatic transmission
  • 193,523 miles


Had been fixed with an insert prior to me buying the truck. Insert cracked and blew out. Threads stipped out. 18 mm insert will not tighten. Mechanic said that it can not be drilled and tapped anymore due to water jacket and valves

- Michael D., Union City, PA, US

problem #24

Mar 052019


  • Automatic transmission
  • 120,000 miles

Annoyed! Now scared the other ones will have problems. Disappointed in Ford.

- Amber P., Rogersville, US

problem #23

May 042018

F-150 XLT 4.6L V8

  • Automatic transmission
  • 142,648 miles

Just bought this truck used and it was extremely clean, but has become a nightmare. I haven’t even driven 3,000 miles and have already had to have the transmission rebuilt and now it’s blown the #8 spark plug out. Should’ve stuck with the Chevrolet!

- Brian W., La Vernia, TX, US

problem #22

Apr 142018

F-150 Xlt

  • Automatic transmission
  • 140,000 miles


I have a 2008 Ford F-150 with the XLT Triton engine. While driving home from work my truck popped a spark plug. I have to take it to my mechanic and sure enough this was exactly what happened. Looking on the internet this is a very common occurrence for the year and model of my vehicle and other vehicles with the same engine. I contacted ford today and they said there were no recalls at this time for this particular engine. I wish Ford would accept responsibility and acknowledge this default on their engine.

- Randall M., Albuquerque, US

problem #21

May 162017

F-150 XLT 4.6L

  • Automatic transmission
  • 144,158 miles

I can not believe that this vehicle has this problem and FORD has done nothing to HELP FIX this PROBLEM and they expect people to accept this as acceptable.... BS

- kelvine, Hamilton, ON, Canada

problem #20

Jul 232017

F-150 XLT 4.6L

  • Automatic transmission
  • 149,129 miles

This is the 2nd time in just over a month Drivers side now 2nd cyl last time it was the one above that l reported..... I do not even trust this vehicle anymore and l will never buy another FORD.... FOUND ON ROAD DEAD STAND TO BE TRUE.... Maybe time to BUY FOREIGN FROM NOW ON....AND THEY SAY BUY NORTH AMERICA .... B.S. TOTALLY FED UP WITH NORTH AMERICAN AUTOS

- kelvine, Hamilton, ON, Canada

problem #19

Jun 012017

F-150 Lariat 5.4L

  • Automatic transmission
  • 149,000 miles


Ford 5.4 L in 2008 F150 spark plugs break off in head a known problem to Ford and not acknowledged for recall fix. Tune up on this engine is at least $800 at Ford dealer and maybe more. I work in an auto parts store and have had customers come in to buy spark plugs and walk away shocked when they hear that plugs will be $100 for 8 and complain that dealerships want as much as $1600 for a tune up. I am seriously considering never buying another Ford truck with all the known problems caused by Ford better ideas.

- Arthur C., Mecosta, MI, US

problem #18

Nov 132016

F-150 XLT 8

  • Automatic transmission
  • 136,636 miles

This is the first occurence of this problem. Found out that Ford has known about this issue all along but was unwilling to issue a recall. They have redesigned a replacement head, changing the original part # and everything but were unwilling to notify unsuspecting product users of the problem. Pretty stinky, I would say.

I would like to initiate a class action lawsuit against Ford. Does anyone know of one that is in progress or would like to start one?

- Steven U., Owasso, US

problem #17

Sep 172016

F-150 STX 4.6L

  • Automatic transmission
  • 134,600 miles

This truck had three that had blown out in the past and has 5 inserts, this time the insert blew out and I don't think that I can find one that is bigger, if someone knows of a place to get 18mm or bigger inserts let me know. Ford is well aware of this problem and our government could car less about us little sh*t head poor people.

- kz1000, Glouster, OH, US

problem #16

Jun 012016

F-150 XLT 4.6L

  • Automatic transmission
  • 114,000 miles

My number 2 spark plug shot out of my engine breaking the coil pack. I screwed it back in and it seemed to tighten up,so I took it out and put Loctite 271 on it and so far so good. It is rated at 500 degrees I tighten plug to 21 foot pounds with Loctite on it.Truck has 114,000 miles on it.Ilso changed all other plugs and tightened them to 21 foot lbs too. No Loctite on them though.

- Gordon H., Eastport, NY, US

problem #15

Apr 112016

F-150 4x4 V8

  • Automatic transmission
  • 148,000 miles


In April 2016 I had a spark plug blow out on my 2008 F150 Ford. I had a different spark plug blow out on the a different plug but the same vehicle one month later. Total cost for both repairs was about $700.00. I have been told by the two auto repair companies that is very common for Ford vehicles. I was also told that it may happen to the rest of the plugs at one time or another. My understanding is there is no recall or assistance with this problem by Ford. Beware of buying any Ford pick up.

- Richard G., Durham, CA, US

problem #14

Mar 102016

F-150 4x4 4.6L

  • Automatic transmission
  • 75,000 miles

This problem could have easily started a fire, but it broke the coil. It is a major inconvenience to get an insert installed and still may happen again. I would guess to have Ford replace a head would be ~$1400.00.

Update from Apr 10, 2016: After inserting the plug repair kit, the mechanic tryed to start the truck and the oil cap blew off. after removing the engine for replacement we found metal all through the intake manifold, which will have to be replaced, a stuck valve broken piston, a leaking head gasket, I am over $5000.00 in this repair

- davidkoon, Parkersburg, WV, US

problem #13

Feb 152016

F-150 V8

  • Automatic transmission
  • 66,000 miles

Ford knows about this problem, they blame the consumer for replacing the plugs and improper torque on the plugs. I still had factory installed plugs in truck. Can be fixed (not always permanently) with HeliCoil kit. But most people don't know of issue till it happens.

- Kevin H., Fargo, ND, US

problem #12

Dec 272015

F-150 XST 4.6L V8

  • Automatic transmission
  • 79,000 miles

I have only purchased Ford. I have never had a problem with my truck until now. While driving at 40mph my truck blew the spark plug out breaking the coil. After reading the complaints online I have learned this is an ongoing occurance for many Ford Trucks. Ford will not take responsibility for the problem.

- Rick W., East Bernstadt, KY, US

problem #11

Sep 092015

F-150 STX 4.6L V8

  • Automatic transmission
  • 109,000 miles

I love my Fords have had since I was 13 years old. Now 68 I always buy Ford trucks, but now I have 08 f150 w/4.6 at 109000 a plug blow out #3 $200 in 09 2015. Then again 12 2015 yesterday. Not fixed, don't have money now maybe next year. Why doesn't Ford fix this? This is my last Ford. I can fix just about anything but the cost of the kit too much.

- davidiny, Perry, NY, US

problem #10

Nov 102015

F-150 XL 4.6L V8

  • Automatic transmission
  • 90,000 miles

Plug blowout is manufacturing defect. These are the original factory installed plugs.

- johnfrommaine, Medford, MA, US

problem #9

Jun 292015

F-150 STX 4.6L V8

  • Automatic transmission
  • 80,000 miles

I'm going to have to miss work pay a lot of money because of this problem and it going to be pain to do this. It only has 80000 miles and Ford needs to fix this problem. I hope soon.

- rogertx, Spring, TX, US

problem #8

Dec 292014

F-150 XLT 5.4L

  • Automatic transmission
  • 108,000 miles

This little problem became a very large problem in the end, costing thousands and endangering my family. We were on a trip to Denver and the spark plug blew out about 30 miles from our destination. It was during a winter storm at night and the temperature was 10 degrees. We were stuck on I-25 with heavy traffic and no idea what the problem was.

We had to find a towing company that would help up on a weekend in a storm and it wasn't cheap, they charged us $300.00 for the thirty miles. I managed to get the plug in when the weather cleared a couple of days later and I was able to figure out what happened, but we had to pay for lodging and meals. I also had to miss a couple of days of work.

I had it fixed by a mechanic in my home town but it didn't last and because of complications that part was $589. After all of that it happened again while my wife was on a business trip in Albuquerque and she was stuck there for 2 days and the mechanic had to replace the head on that side costing us another $1500 and lots of undue stress on my wife.

I would like to file a civil suit against Ford but I'm not sure if that is even possible. If anyone has any ideas I'm open for any suggestions.

- myounger, Carlsbad, NM, US

problem #7

Mar 122015

F-150 STX 4.6L V8

  • Automatic transmission
  • 95,000 miles

This morning I was on my way to work at about 6:30 this morning and my spark plug blow out of socket again for the 2nd time. My wife and I are so frustrated with FORD and have decide to never own anything with the Ford name attached to it. I am having to take time off work and its my birthday to deal with this issue. I don't understand that when you research all the complaints on the internet that FORD want do a recall for this piece of sh*t and because they wanted to make a cheaper product. If I have to have it repaired, I will repair it long enough to get rid of it. (Found On the Road Dead) not I understand why this term was used with FORD. We are pissed to the max!!!!!!

- Kala R., Belmont, NC, US

problem #6

Jul 012014

F-150 STX 4.6L V8

  • Automatic transmission
  • 87,000 miles

After researching the Internet this is a common problem and Ford (2008 F150 4.6l v8 Triton 86k miles) does not want to issue a recall. My wife was on her way to work and the spark plug ejected and had to be towed 2 times. This is so annoying and ridiculous and Ford should be ashamed. The issue was fixed and seven month later my engin is ticking again. There is air around the socket and afraid it is going to blow again. HELP!!!!!!

- Kala R., Belmont, NC, US

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