Engine Exhaust System problems of the 1999 Ford F-250

#6 spark plug blew out of the head. I had it repaired two days later. Two days after that, the #3 spark plug blew out of the head while I was driving at 25mph. During both incidents gasoline fumes and exhaust filled both the engine compartment and the passenger compartment.

Heard a loud pop from under the hood while driving at highway speed. Sounded like it was right in front of the globe box area. The engine ejected a spark plug which is a very common failure for triton engines with aluminum heads - threads failed that hold the spark plug in place. I did not hear any warning sounds that a failure was imminent. The passenger side of the engine, spark plug closest to the firewall was blown out which is also very common. I smelled gasoline and exhaust and fortunately this failure did not result in a fire.

Twice I have been stranded by the same problem. In July while driving on a major 4 lane highway towing my horse trailer, my 99 Ford f250 with the v10 engine blew a spark plug. It sounded like and exhaust leak and I kept driving later to find out that this situation often causes an engine fire. Again in November my truck did the same thing, same plug after the manufacturer recommended repair was done. This is not safe at all and a design defect of all triton Ford truck engines.

The contact does not own a 1999 Ford F-250 superduty. When test driving the vehicle, the contact heard a noise and took it in for a diagnosis. An exhaust leak was discovered at the manifold and the studs were detaching near the manifold. The manufacturer would not assist. The failure and current mileages were 141,000. Updated 03/27/09 updated 03/31/09.

I purchased a new 1999 f250 sd 4x4 on 4/2000. At about 11-5 -2006 with only 116,000 miles on the speedo, I noticed 9 exhaust manifold studs broken off . Took to dealer and authorized them to replace 20 studs and 20 nuts ,with genuine Ford parts. Repair cost me $833. 00. Came with 12 mo/12,000 mile warranty. On 10-5-2009 noticed 2 studs were broken again, 25,000 miles later. Took to dealer, they stated could not find the cause and would deduct 10% off the bill if I get it repaired. Told me ok to drive it, not leaking. For one thing, if bolts are missing it will leak raw exhaust into the atmosphere and potentially into the passenger compartment causing the driver to fall asleep and crash. Not to mention polluting the environment. The epa would like to know about it I'm sure. So basically, the factory installed studs lasted 116,000 miles, and 2 of the replacements lasted only 25,000 miles. How many more will break off in the time to come ? I will not pay to fix this problem again. The first time should have been covered by the factory, its their poor design. . Any and all engine bolts should last the life of the engine. There are alot of people out there with the same problem not only with the v-10 but with the small v-8's too. Look at a Ford forum site, or type it into ask. Com see for yourself.

Began to hear a slight ticking of what appeared to be a slight exhaust leak. Within a matter of a minute or two it got loud, then there was a pop. The rear spark plug on the passenger side blew completely out of the motor. I pulled over and was in need of a tow. The mechanic had to put some sort of insert in the head to fix the hole.

Noticed an exhaust leak while driving, checked engine to find #3 plug had blown out of engine leaving no/stripped threads left in head rendering the engine unusable. Truck has sat for four months . Priced a bare head from Ford dealer at $1,100. With cams $1,600 or a recycled engine between $1,400-2,000 plus labor. Purchased recycled engine, 5. 4l, 8 cyl, sohc with 15k miles at $2000 due to cost effectiveness as opposed to the cost of replacing one head. This is without labor as I am a certified Ford engine master and will do the work myself.

Consumers feel sick while driving in vehicle, possible exhaust leak into cargo compartment.