My guess is a prior owner (or mechanic) was digging around in the intake and set this up on the cowling, it dropped into the fresh air intake? Just a guess. Id wonder what they were doing digging around.


Not sure about the buzzing. I think diesels have a throttle shut off that will operate after the motor turns off. Could be something going on with that? mine makes some noises when off (or shortly after shut off, then quiet), but has since mile 1- so Ive not paid much attention to it.