A co-worker has a '97 F-150 with the 4.2L V-6 with straight drive. It's an extra vehicle at the house; she normally drives a 2010 Fusion Sport V-6. She had the F-150 at work the other day and started it and heard a gawd-awful clanking noise from the engine. Turned it off and called her husband. He said it would probably make it home, and it did. They went to start it the next day and it turned over and immediately seized.
The truck only has 75,000 miles on it, and it's been serviced with Mobil 1 every 10k miles since new.
I'm sure it's not a lubrication-related failure. And to be clear, this is not a Mobil 1 hate thread, please don't turn it into one; I use Mobil 1 myself.
Are there any "bad genes" with this engine like known valvetrain problems? I figure it probably dropped a valve by the description of the symptoms. At first I would have suggested possibly a cracked flywheel or something else external, but it's indeed terminal.
Do these share the same weird spark plug thing that the Modular motors have? Even with those, if you had a bad one wouldn't you sense the loss in power? She said the oil pressure and water temperature gauges read normal on the way home and the engine had normal power. It was just clanking bad all the way home.
The truck only has 75,000 miles on it, and it's been serviced with Mobil 1 every 10k miles since new.
I'm sure it's not a lubrication-related failure. And to be clear, this is not a Mobil 1 hate thread, please don't turn it into one; I use Mobil 1 myself.
Are there any "bad genes" with this engine like known valvetrain problems? I figure it probably dropped a valve by the description of the symptoms. At first I would have suggested possibly a cracked flywheel or something else external, but it's indeed terminal.
Do these share the same weird spark plug thing that the Modular motors have? Even with those, if you had a bad one wouldn't you sense the loss in power? She said the oil pressure and water temperature gauges read normal on the way home and the engine had normal power. It was just clanking bad all the way home.