Started my 2001 Ford E-350. After 10-15 seconds, large pop and engine died. Opened hood and found right rear spark plug had blown out of engine. I'm an engineer and I've been working on engines of all descriptions for 35 years. This is an obvious engineering defect. Ford should replace the parts. We have a fleet of Ford. I now wish it was a fleet of Chevy's.

- Rose Hill, KS, USA

Driving down a street at approx. 40mph I heard a bang and then a bunch of air escaping. Sounded like an exhaust leak. Spark plug was blown out of number 2 cylinder. Had repaired at local repair shop, put in a new heli coil. Since 7-6-09 has happened again. This time number 8 cylinder. These Ford engines don't have enough thread on the engine heads to hold the spark plugs in. It's probably going to keep happening until all of the threads are replaced.

- La Habra, CA, USA

My 2002 Ford E-350 has been found to have a spark plug blow out. This hapened without notice. I have been told that I need a tune-up. I have researched online and found many complaints about Ford truck engines ejecting spark plugs. I'm concerned that if all the plugs are replaced, that the problem may not fuller be solved without some very expensive work.

- Decatur, GA, USA

The contact owns a 2002 Ford E350. While driving approximately 20 mph on normal road conditions, the contact heard a loud noise that sounded like an explosion. The vehicle proceeded to a stop sign and resumed normal operation. The failure occurred without warning. The vehicle was taken to an authorized dealer for inspection and they stated that the spark plug blew out in the engine. The vehicle was repaired. The vehicle was taken to an authorized dealer on a separate occasion for an identical failure. The dealer replaced the spark plugs. The failure mileage was 60,000 and current mileage was 72,000.

- Carnegie, PA, USA

Ford 2002 E-350 5.4L Triton. Two spark plugs have blown out so far. Original plugs appx 95,000 miles. Ford says the plugs should not be changed until 100,000 miles.

- Quakertown, PA, USA

2002 Ford E350 5.4L spark plug #7 blow out. The average consumer would think that something was wrong with the exhaust system before ever knowing or expecting that compressed fuel was being pumped into the engine compartment from the exposed spark plug orifice. At the same time, the sparked plug coil wire is still active, combining a non-contained fuel / spark condition, possibly resulting in fire or explosion.

- Minooka, IL, USA

The vehicle in question was purchased used with 82,000 showing on the odometer. I owned the vehicle for 2 1/2 months prior to this engine issue. Left for work on the morning of Dec. 20 2006. I am an in home service plumber. Approach. 1:30 pm on the aforementioned day, I started my vehicle to leave one job and proceed to another, and upon starting the vehicle, heard a very loud pop, followed by a continuous exhaust leak type sound. Upon further visual investigation, I discovered that a spark plug was laying on top of the manifold and the number 2 cylinder coil pak was distorted and pulled away from it's attached position over that cylinder. The failure was the plug ejecting out of the cylinder head ( per dealer ) and the consequences are missed days of employment until the vehicle is repaired. The repair will cost me around 4800,00, new cylinder head plus labor to install. Vehicle is an E- 350 cargo 2002. 5.4 Triton. I was unemployed 7 months prior to this vehicle purchase. The new job I have requires me to purchase a service vehicle.

- Bensenville, IL, USA

Ford E350 5.4L trinton engine blew out spark plug. It happened when I resumed driving after stopping at a red light. Researched this out and found hundreds and hundreds of complaints on the internet.

- East Longmeadow, MA, USA