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01-06-2022, 02:00 PM | #15 | |
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01-06-2022, 02:26 PM | #16 | |
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01-06-2022, 04:13 PM | #17 |
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I've had tapping on startup once, it was the day after my car had been picked up J02 valve spring recall (3 years ago) and the fuel in the tank had been sitting for a month. It was also the middle of July in a 100+*F. I think it was a fueling issue for one reason or another but given it was right after the recall service, can't throw that out.
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01-16-2022, 08:42 AM | #18 |
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Hello again guys.
After recording each start for ~10 days, it finally happened again (after leaving it outside for a day and a half), and I was able to capture it : It starts at around 15s and is quite loud (before that there is the sound of rain). No sure how to describe it, kinda metallic vibration/creaking? Last edited by Youx; 01-16-2022 at 08:53 AM. |
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01-16-2022, 09:31 AM | #19 |
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Scary noise on cold start
That sounds like metal on metal. First thing I’d do is check the oil pressure on idle.
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01-16-2022, 09:39 AM | #20 |
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01-16-2022, 09:43 AM | #21 |
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And then for the computer nerds on the forum:
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01-16-2022, 07:29 PM | #22 |
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I am certain that it's not engine mechanical. Other than that, I could make some wild guesses. It does sound like a metallic creak.
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01-17-2022, 04:08 AM | #23 |
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Thanks for the feedback. That would be quite a relief
Where would you look at first? I was thinking loud like that it could come from somewhere along the exhaust line, like something loose or a catalytic converter starting to die? (I know from experience catalytic converters can make a metallic rattle when they start to break, although 80k km seems a bit early). Bottom inspection first? I’ll keep in mind the oil pressure check too, but for now I don’t have the equipment… |
01-17-2022, 09:25 AM | #24 |
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Can you shoot another video looking under the hood (bonnet). Maybe look specifically at the belt tensioner. Also is the sound coming more from one side of the engine or the other.
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01-17-2022, 09:32 AM | #25 |
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My first thought was exhaust heat shield rattling or touching part of the frame.
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01-17-2022, 11:24 AM | #26 | |
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I’ll get the car back in 2 weeks, so I’ll do another video then (and maybe get someone to start it while I film/listen from outside). I should also have access to a pit then, so I’ll look at the visible exhaust parts. Thanks! |
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02-07-2022, 09:44 AM | #27 |
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02-07-2022, 01:27 PM | #28 | |
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It's an odd one! Maybe a loose engine support. It's loud!
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