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Cured my "buzz" at idle

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Had a "buzz/tinny rattle" at idle you could here when outside the car at the front. Was checking the engine when cold this morning and discovered the heat shield for the exhaust manifold was loose at the bottom bolt. Tightening didn't help so installed a washer and retightened the bolt. "Buzz" gone and heat shield doesn't flex if pressed.
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...does it make you nervous to wonder "...what else..?" they might've forgotten to tighten at the factory?
 

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Discussion Starter · #3 ·
70AARCUDA

Actually it was tight. The cap screw threads stop just short of the head flange but the heat shield is just a fraction thinner than that so a washer was required to add enought thickness to allow for clamping. Doesn't really bother me as it is not structural. Wouldn't trade it for the world.
 
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