The problem is aluminum heads that are real thin in the spark plug area. So you have a very few threads holding the spark plugs in. In some engines it is only four threads from the factory. The aluminum expands and contracts during heat cycles. This causes the threads to wear/weaken. Also the engines running cleaner lets the plugs be in the head up to 100k before the recommended tuneup interval.
So carbon builds up on the bottom of the plug which makes it more prone to seize when being removed. Ford knew of the problem as early as 2006 when they issued a service bulletin with removal instructions and special remove tools to help get the broken plugs out.
So you have a bad designed that was kind of brought on by Ford having to make the engines run hotter to met the EPA regulations.
A good friend had a Ford F250 with a 5.4 blow a spark plug out of the right head at 75K. Plugs had never been touched but Ford told him it was a wear item and would not cover any of the cost of the repair. So a spark plug is a wear item???
Ford also has major issues with their 4.0 OHC engine too. Same friend had a Mercury Mountaineer with 88K shreading the timing guides and ruined the crank with metal shavings. Once again Ford did nothing to help him.
He is now driving his first GM product. He is 61 years old and been a loyal Ford new vehicle buyer,but no more.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
