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Buzzing/rattle on cold start. NOT lifters.

Home-org Forums Nuts & Bolts Tinkering Buzzing/rattle on cold start. NOT lifters.

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    • Novice
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    Been chasing an annoying cold start rattle/buzzing noise. Sounds like a heat shield, and figured it was the exhaust manifold heat shield but it doesn’t seem to be. It’s definitely not lifter tick, it’s a lot louder and goes away once the car warms up about a mile or two down the road. I’ve googled it but can’t find anything else I should go look for as a red flag. Anyone got a suggestion as to where to look next?

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    • Pro
    • ★★★★

    The down pipe heat shield is a very common culprit. I had a hose clamp on mine for years! Come to my place Sunday after the car show and we can figure it out.

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    • Novice
    • ★★

    Unfortunately, I am working on Sunday, so I can’t attend. But I’ll be under the car for a good portion of the day working on the timing belt and water pump swap today, so I’ll see if I could find that thing you mentioned underneath there.

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