Trobinson Posted July 1, 2015 Share Posted July 1, 2015 I'm hearing a knocking or Rachel like noise when the bike is at low rpm. It's prominent with no load. Above 2k though it's normal. I can hear it from both cylinders. Link to comment
Trobinson Posted July 1, 2015 Author Share Posted July 1, 2015 Meant to add I don't recall hearing it when it's cold. Link to comment
Trobinson Posted July 2, 2015 Author Share Posted July 2, 2015 When I started the bike this morning the noise wasn't there which is what I recalled. Perhaps it has something to do with outside temps of 100+? Think I'll try fresh oil and see what that does. Can't be an ignition issue since the noise is at low rpm's w/o load. Link to comment
greiffster Posted July 2, 2015 Share Posted July 2, 2015 Maybe the cam chain tensioner. Do you know if you've got the original cam chain tensioner or the new design? Perhaps the throttle valve is bouncing off the stop on the right side? If the plastic is off you can reach under the throttle body and hold it against the stop with your finger and it should quiet. Link to comment
Trobinson Posted July 2, 2015 Author Share Posted July 2, 2015 New cam chain tensioner on left side, original on right. No noise when it's cold so I don't think it's either the tensioners (unless oil is thinning out enough in the 100F+ heat) or the right TB. Perhaps I'll double check that this weekend as I did have to make an adjustment to the stop screw (it wasn't even touching the stop when I started the TB balance). Link to comment
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