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Old 10-11-2012, 05:45 PM   #16
BeamingBeagle OP
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Location: Los Angeles
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Quote:
Originally Posted by mouthfulloflake View Post
that bike sounds smooth and quiet to me, especially when compared to the one I ride daily.
Since doing the valves and TBs I've really become attuned to the motor so I really can't tell anymore. That's why I ask. I was worried for quite awhile because PO had the valves cranked down so hard that they may have been messed. The bike works fine tho. Theres a lot of power and other than the what I assume is normal weird jumpy throttle stuff under 3500 its ok.
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Old 10-11-2012, 05:53 PM   #17
mouthfulloflake
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I understand that, as ive grown used to mine, I thought it was smooth before i heard yours.



I am no expert for sure, but IM not hearing anything there that would make me worry.
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Old 10-11-2012, 06:49 PM   #18
mudmullet
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Doesn't sound too much different from mine. Grab a big screwdriver and put the end of the handle up to your ear and put the blade on different parts of the motor and see if you can better pinpoint the origins of the sound.
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Old 10-11-2012, 07:02 PM   #19
layabout
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2002 1150GS here...sounds normal to me. A lot like half a VW Beetle.
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Old 10-13-2012, 01:45 AM   #20
KSBEERHUNTER
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Throttle bodies don't knock. They might click a little. Twist the throttle ever so slightly and you can hear the change in the clicking sound. My guess is that what you are hearing is from crankshaft end play. Loudest at idle under no load. Goes away or can't be heard while riding. Probably your knock is worse after engine is at operating temp. Mine sounds bad just before I shut it down after a ride. Have 162,000 miles on it. I quit fearing sounds from it a long time ago.
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Old 10-13-2012, 04:25 PM   #21
BeamingBeagle OP
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Quote:
Originally Posted by KSBEERHUNTER View Post
Throttle bodies don't knock. They might click a little. Twist the throttle ever so slightly and you can hear the change in the clicking sound. My guess is that what you are hearing is from crankshaft end play. Loudest at idle under no load. Goes away or can't be heard while riding. Probably your knock is worse after engine is at operating temp. Mine sounds bad just before I shut it down after a ride. Have 162,000 miles on it. I quit fearing sounds from it a long time ago.
That's it. Exactly. Awesome. Thx.
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Old 10-13-2012, 10:59 PM   #22
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Be very careful. A buddy and I were putty around town and hit the bar. After about ten beers we headed out and as my friend fired up his 2001 GS I heard the faintest little sound. I was having trouble discerning whether it was the bike or my new wrist watch. I told him then he should probably not ride home and have the bike towed due to the noise. He didn't listen and on the way home his left cylinder blew out and took his leg clean off from the knee down. Sucks for him but he does have a bad ass new pirate style peg leg now.
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Old 10-13-2012, 11:54 PM   #23
def
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Quote:
Originally Posted by BeamingBeagle View Post
Wow guys, thanks for all the advice! Sorry it's taken me a while to get back with the answers but here they are along with a link to a youtube video I made trying to capture idle and a slight rev.

link to video:
https://www.youtube.com/watch?v=iVqO...1&feature=plcp

1. frequency seems pretty consistant
2. sounds like just under the cylinder head (if your facing the bike front left)
3. No, it's more noticable when it's idling but I can still feel it (or so I think) when its up around 4000
4. clutch in or out has no effect
5. pretty consistant hot and cold (maybe a little more pronounced when hot)
6. 20w-50 castrol synthetic. almost 3000 on this change (engine has 48,000) filter is bmw,
Cold start test was 6 seconds until light came on

And thank you!!!
Your Youtube sounds normal. You may want to check the alternator belt.
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Old 10-14-2012, 12:19 AM   #24
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Quote:
Originally Posted by def View Post
Your Youtube sounds normal. You may want to check the alternator belt.
Roger that. I've been meaning to change it.
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