Quote:
Originally Posted by ManualF150
The rev-limiter will work for when you floor it. When you are barreling down a hill, the force of the hill will make it go over the rev-limiter if you are dumb enough to drop it in 2nd at high speeds.
In the owners manual it even states this.
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Clearly the guys who wrote that manual did not consult with glc first!
When I first brought up the possibility of over-rev in this thread, this was the exact situation I was thinking of.
One valve kisses a piston lightly. Over-rev seems like a possibility worth inquiring about to me. Especially if someone not familiar with the OP's truck may have borrowed it and caught 2nd or 3rd when they meant to grab 4th or 5th.
BTW, when the new valve gets put in, I would seriously recommend replacing the valve spring, or at least testing it to confirm it is within spec.