Hmm Rattling noise from engine under load

**cantfind1** · 01-09-2010, 06:56 PM

mmmmmm sounds to me like vanos then. By any means I wouldn t be driving it!

Have a look, open bonnet leave engine running and then gently rev the car, if you have someone to help you, you can listen while they rev. If its the vanos it will be obvious and be rattling from the unit.

It is common in these vanos units for the bolts holding the cams to the vanos unit becoming loose, hense cams rattle in the housing.

I would not be driving it and if you have to no going above 3000rpm!!

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01-09-2010, 06:56 PM	#11
cantfind1 S5, Sport Off, DSC M-track Join Date: Oct 2009 Location: Sydney Australia Posts: 675 Casino cash: $6490	mmmmmm sounds to me like vanos then. By any means I wouldn t be driving it! Have a look, open bonnet leave engine running and then gently rev the car, if you have someone to help you, you can listen while they rev. If its the vanos it will be obvious and be rattling from the unit. It is common in these vanos units for the bolts holding the cams to the vanos unit becoming loose, hense cams rattle in the housing. I would not be driving it and if you have to no going above 3000rpm!!