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Old 06-16-2019, 05:09 PM   #23
31Cabriolet68-C
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Join Date: Jan 2018
Location: Greenwich, CT
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Default Re: Help me identify engine noise?

Here's another suggestion, based on your great ("tzing, tzing, tzing...") description...
Could a loose (warped, broken, bent!?!??!.) fan blade be wobbling just enough, to gently sweep over the lower fins of the radiator?
Seems very unlikely, but if the fan is in the mix, it's risky enough to mention it even as a long shot....
It might not be too hard to check, and
I think if you looked at the inner face of the radiator, and it was undamaged, then at the least, you'll have eliminated one more thing.....
TallyHo
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