Ford F-150 XLT 57,000 miles - spark plugs stripped, and destroy spark plug. Noticed hissing sound from under hood when engine was just turned off. Ticking sound when first starting engine. Took vehicle to local Ford dealership for servicing. No warranty support. Claims to never hear of problem, even though F150-online forum has over 100 such incidents reported.

- Tipp City, OH, USA

I have a F-150 pick-up still being paid off and it is leaking for the right hand side. There are technical service bulletins for this but it will cost a couple of thousand to replace the head. If Ford knows about this and I have looked all over the internet and others had similar problems, why hasn't a recall been issued.

- Islip, NY, USA

1999 Ford F150 lightning blew two spark plugs out of the head.

- 29 Palms, CA, USA

I have a 99 Ford F150 with a head gasket problem. The left head was replaced with 3000 miles on the truck because of the same leak. The dealer told me that Ford had some bad millwork on the heads and they couldn't get a good seal. Now with 73000 the heads are starting to seep again. Also my truck has a crack in the door metal near the corner of the window of the drivers side. Here again it seems to be a problem found in many F150's from 97 through 01.

- Kansasville, WI, USA

My truck started making a noise and slowly got worse over about 6000 miles. I brought it into Ford and the said it was pistion slap or a bad bearing. They tolsd me it wouldnt affect the performance or the truck and it is a fairly common problem. So I told them I wanted to trade it in and they said they didnt want it because it was making noise. Help!!!

- Council Bluffs, IA, USA

3 spark plugs on my 99 F150 have backed themselves out, causing immediate engine decompression. The only way to adequately repair is to completely remove the head, a multi-day, multi-dollar task. Viewing auto message boards suggest I am not alone in this experience. Apparently there is some defect in the Triton V8 engine design, although my research shows Ford has not addressed this issue.

- Blairsville, GA, USA

Consumer states engine service light stays on. Dealer notified.

- Denver, CO, USA

There is a common problem with the right side head gasket in 5.4L V8 engines in vehicles from 1999. This problem results in a blown head gasket that requires repair at great expense. In addition the repair that is approved by Ford is not permanent, so the vehicle many times has the same problem multiple times. I personally have a vehicle with this problem and have several friends with the same problem. I believe that Ford needs to issue a recall for this problem and fix it right so that recurrences do not happen.

- Oregon, WI, USA

The head gaskets with 4.6 and 5.4 engines were defective. (Ford bulletin 02-22-07) the oil dripped onto the flange which held the exhaust pipe to the manifold on the right side of the engine. Scc

- Paradise, UT, USA

I have a 1999 F150 Ford truck. Large oil leak from the right hand head gasket at the rear of the block on my engine. Also a leak on outside right hand filling intake valley. Estimated cost from Ford dealership $1600 depending on what it takes to repair it. I feel this is a major repair and possibly the part was poorly machined.

- Sleepy Eye, , MN, USA

The spark plug blew out of the aluminum cylinder head while driving, the entire cylinder head was replaced.

- Humphrey, NE, USA

Spark plugs blowing out of aluminum heads on Triton 5.4liter motor.causing major damage to heads.

- Fredericksburg, VA, USA

The head gasket leaked oil, which resulted in a loss of engine power.

- Willmar, MN, USA

Right rear head gasket leaking oil, and is also stated in manufacturers T.S.B. no recall as of yet.

- Hendersonville, TN, USA

Had a spark plug strip itself from the head and damaged the threads on the head where the spark plug is screwed into the head.

- Collierville, TN, USA

The head gasket failed. Oil leaked again out of the right rear cylinder head. Scc

- Trumbull, CT, USA

I have a 1999 Ford F-150 pick-up with 5.4L V-8 engine. It has had a oil leak on the righthand headgasket. Ford repaired this problem, and it dosen't seem to be leaking any more. This is a problem that has plagued many of these trucks.

- Hollister, CA, USA

1999 Ford F150 5.4L with badly leaking head gasket right side. Seems to be a known problem for Ford yet no recall or assistance from Ford? leaking oil is a hazard and oil on hot engine components not safe.

- Lafayette, IL, USA

This is a svt addison vehicle. Consumer states that there was a manufacturer owners notification for this vehicle engine inter cooler, but the notifcation ended September 2002. Per the notification theirs a defect in the inter cooler that causes coolant to leak into the engine, which results in engine seizing up. Consumer has experience this problem put dealership is refusing to fix as a result of the notifaction being over.

- Howell, MI, USA

Consumer states that while driving and without warning the head gasket blew causing coolant fluid to leak. Dealer notified

- Shelby, OH, USA