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sr20det redtop rattle sound video inside

Hi,

got this strange rattle sound. i think it comes from the head
any ideas?
two videos:

sr20det redtop rattle idle start stop. CHAIN??? - YouTube

sr20det redtop geräusch - YouTube

Could be, maybe the chain tensioner is going bad. pull the VC and remove the upper guide above the chain in the center to see if it goes away. If so the tensioner might need to be replaced

Quote:

Originally Posted by Sileighty_85 (Post 5322693)

Could be, maybe the chain tensioner is going bad. pull the VC and remove the upper guide above the chain in the center to see if it goes away. If so the tensioner might need to be replaced

alright but according to the video its the chain isnt it?

removed the upper guide, only light scratches visible.
got the older tensioner (left in this picture) so i think im going for a newer more massive one (right side of the pic)
http://dsmphotos.smugmug.com/photos/...91_pT9W4-M.jpg

source with more pictures:
HOW TO: Change Timing Chain Tensioner - SR20 Forum