While driving 25 mph the #2 spark plug striped its threads and blew out of the head. The plug remained in the wiring harness cap and continued to spark. The repair cost $220. I am told this is an ongoing defect in the design of some of Ford engines.

- Mt. Washington, KY, USA

Spark plug blew out of the head with such force that it cracked the coil and was sparking on the fuel line with fuel vapors coming out of the head at the same time. This could have caused a fire/explosion if the vehicle could not have been shut off quickly enough. I was idle in my driveway and not on the highway where it would have taken longer to shut the vehicle off. Internet research returned astonishing amount of complaints for the same issue.

- Adrian, MI, USA

Spark plug gets blown completely out of the engine block and destroys the engine coil. The engine then needs to be rebored to be repaired to be drivable. This occurs while driving the vehicle and has now happened to us twice while the vehicle was under no load.

- Holley, NY, USA

I have a 1998 Ford pickup with a 5.4L engine and just today as I was driving it the spark plug blew out. As soon as I heard the popping sound I immediately shut the truck down. I opened the hood and there was the plug dangling there. I was able to install the plug back on but got 3 turns on it and it was tight. No way should a spark plug only have a few turns on it and no way should a plug fly out of an engine that is spewing gasoline and the plug still sparking. If there is a class action lawsuit against this company sign me up. Never again will I buy a Ford product. All their vehicles catch fire( remember the cruise control). This is a prime example why the us auto industry sucks and they still want us to bail them out. I have half a mind to go to detroit and beat the crap out of an engineer there. I am all for an attorney to call me if it is a class action lawsuit. If you make faulty dangerous products such as this you should be put in jail! people can die from this! I hope Ford goes the way of all the rest of the old american auto makers. We should not have to bail them out so they can make more dangerous products and snowball the public!!

- Stewart, MN, USA

I was towing an ultra light camping trailer with the cruise control engaged when I smelled what appeared to be an electrical fire then the engine immediately failed. I replaced the entire engine at a cost of $ $4000 and have had at least 10 more instances where the cruise control stopped working on the interstate.

- Stonewood, WV, USA

The truck was started and the spark plug blew out from the engine. The truck was taken to a local dealership. They stated it wasn't a problem. The next time, the spark plug blew out while traveling on the highway at 55 mph. The consumer had to coast to the side of the road.

- Portage, WI, USA