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Discussion Starter · #1 ·
Been dealing with a weird vibration/noise for the past few months. It sounded like the something loose was rattling under the hood, like the hood itself wasn't closing properly, and it would generally occur around 3000 rpm.

I was installing a K&N air filter yesterday and had to remove the plastic & foam engine cover to access the airbox. Well I guess one of the plunger/grommets that attach it to the engine had popped up, because after the installation, the noise was gone!

I guess the cover can work itself loose, so check it if your getting an ugly noise from under the bonnet.
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