Rattle sound from XK8 during decleration
#1
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I have an XK8 and I get a rattle noise when slowing down, or when at idle and revved up on the way back down the rev range there is a rattle noise.
This is a video of a car doing the exact same thing. I just changed out the tensioners for new ones and the primary guides look good.
This is a video of a car doing the exact same thing. I just changed out the tensioners for new ones and the primary guides look good.
#2
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hi,
If your engine sounds the same as the video clip I can only think it is a slapping timing chain.
it could be a failed primary tensioner, or perhaps a problem with the tensioners you have changed.
id not run it again until id removed the covers and check the secondary tensioners indeed are primed, check for slack in the chains. then id take the front cover of and check the primary chains, from the sound I can only imagine a primary chain flapping about.
you could check oil pressure. if it was restricted it could stop the tensioners working properly. remove sump and check the oil pick up for blockage. pieces of plastic get inside the oil pick up. you will need to undo the oil pick up and tip it up to remove the bits.
hope this helps, lets hope it is something more simple.
stephen
If your engine sounds the same as the video clip I can only think it is a slapping timing chain.
it could be a failed primary tensioner, or perhaps a problem with the tensioners you have changed.
id not run it again until id removed the covers and check the secondary tensioners indeed are primed, check for slack in the chains. then id take the front cover of and check the primary chains, from the sound I can only imagine a primary chain flapping about.
you could check oil pressure. if it was restricted it could stop the tensioners working properly. remove sump and check the oil pick up for blockage. pieces of plastic get inside the oil pick up. you will need to undo the oil pick up and tip it up to remove the bits.
hope this helps, lets hope it is something more simple.
stephen
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99xk8guy
XK8 / XKR ( X100 )
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06-05-2023 06:28 AM
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