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#41 |
Join Date: Jun 2013
Location: Toronto
Posts: 782
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Pete I emailed you about the ticking this was the exact sound mine made too from sitting for several months. Maybe it wasn't smart of me to have kept it idling and giving it a bit of throttle while parked but as I was making videos of it it went away within about 20 seconds. it got quieter and quieter and disappeared while idling.
I searched my phone but Ive deleted them. with 17k photos and videos on my phone I must have deleted them trying to free up space ![]() |
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#42 | |
![]() Join Date: Dec 2003
Location: Chicagoland,IL
Posts: 2,680
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Hold at 1500-2000 RPM for a few minutes or till noise goes away. Pete
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'91 #1635 PoloGreen 350 LT5 11.09 @ 129.27 11.04 @ 128.86 474RWHP 400RWTQ http://www.youtube.com/watch?v=SFNFOhGGlR4 http://www.youtube.com/watch?v=ZlRIOMwaDYY https://sites.google.com/site/peteszr1garage Last edited by Pete; 03-03-2015 at 08:14 PM. |
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#43 | ||
Join Date: Nov 2014
Location: NH
Posts: 13
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https://drive.google.com/file/d/0B83...ew?usp=sharing https://drive.google.com/file/d/0B83...ew?usp=sharing Based on comments here, it sounds like running the engine with a bad chain tensioner may not be a good idea. I'd like to try holding at 1500-2000 RPM under no load to see if that may free a stuck lifter, but I only want to try that if there is low risk of doing damage as a result of a chain tensioner issue. Quote:
Does anyone have a recording of an engine with a bad timing chain tensioner? The noise in my car definitely sounds like valvetrain clatter, and as people have pointed out, it is timed to the camshaft speed. --Colin |
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#44 |
![]() Join Date: Dec 2003
Location: Chicagoland,IL
Posts: 2,680
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First try easy stuff like belt tensioner then try the 1500-2000 rpm for about 30-45 seconds if sounds starts to quiet down your on the right path.
If it's chain tensioner issue it should not hurt anything the worry is if a chain guide is bad/broke now you have metal to matel. When the LT5 sits for a while lifters do/could bleed down. Try above let us know outcome. Pete
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'91 #1635 PoloGreen 350 LT5 11.09 @ 129.27 11.04 @ 128.86 474RWHP 400RWTQ http://www.youtube.com/watch?v=SFNFOhGGlR4 http://www.youtube.com/watch?v=ZlRIOMwaDYY https://sites.google.com/site/peteszr1garage |
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#45 |
Join Date: Nov 2014
Location: NH
Posts: 13
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Well, this is anti-climatic, but I just started the car... and the noise is gone. Right from startup, the engine sounded fine with a normal idle.
It's been almost a week since I last started it, and it's 37 F ambient here today (perhaps a little warmer than that in my garage.) I don't know if it was the higher temperatures in the last several days, or if the Marvel Mystery Oil actually helped, but I'm quite happy this resolved itself! I'm sorry I don't have more information about the nature of the problem, but I think we had some good discussion here and I'm quite relieved that this didn't turn into another big car project (as I already have enough of those.) Colin |
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#46 | |
Join Date: Jun 2013
Location: Toronto
Posts: 782
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#47 | ||
![]() ![]() Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,792
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![]() I am buying a case of Marvel Mystery Oil ![]() |
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