squeeling whistleing noise question
2008 f350 with 180k.
at idle truck is quiet, reving motor truck is quiet
at takeoff from a stop there is a whistle noise sort of squeal noise.
what the hell could this be? tensioner? turbo? any thoughts and how to check?
Can't seem to locate where but seems to be under load
thanks

 

Uppipe leak? My truck did same when uppipe leak.

 

Or is it more of a squeal like this?

https://m.youtube.com/watch?v=S7tgWIGdV2Q

i hear 6.4s squeal like that all the time. It more often is due to a failed exhaust manifold gasket, but can also be the turbo(s).

 

Sounds just like the second video-
I guess I will poke around under the hood some more......

 

So I noticed it is quiet at idle, as I pull off it starts at 2000-2500 rpm under load....... Can't pinpoint anything tho