Today I'm buying a used 2011 F-150 4x4 from the original owner. The truck is immaculate and has just about everything I could want, especially the max tow pkg. It's been dealer-maintained every 5,000 miles (i've seen the records). It's a larger truck with the 6' bed.

My only concern with the truck is this: accelerating from a dead stop there is a slight jolt when the engine engages the drivetrain. The owner said that it's been that way from the first day he got the truck and when he asked the dealership about it they said that it was due to the longer 6' bed. I'm wondering if anyone else out there with the 6' bed has experienced this?