Booster rattle

[Kenneth]

Hi I am looking for help; when I accelerate enough for the turbo charger to cut in, there is a light rattle when I change gear, if there is no boost showing on the dial there is no rattle, what are the possible causes of this? Thank you

[Doug]

sounds like normal turbo stall from the changing of the gears

I'd call it a stuttering or chattering sound and it eminates from the front left fender area--this is where the sound/pressure wave exits the end of the intake system

[Kenneth]

Thanks for the quick reply thats exactly what it sounds like, nothing to worry about then.

[evert]

It is not good for the life-span of the turbo. For this reason dump-valves are used in all modern turbo diesel cars. In stead of the rattle you will get another sound, unless one implements a closed loop dump-valve. Additionally the turbo spins up a bit faster after a gear change.