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rattling/ vibrating (Read 456 times)
Ed
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rattling/ vibrating
05/11/13 at 09:27:17
 
I'm having a weird rattling or vibrating in the upper part of the engine. My header pipe used to come loose, but I replaced the gasket. it isn't loose anymore, but I'm wondering if that is related. Any other suggestions?
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Re: rattling/ vibrating
Reply #1 - 05/11/13 at 09:32:44
 
When you hear the noise... feel the headlight mounting ring...
... also, put your hand on the speedo bezel, and apply gentle pressure, up and back...
...do those tests, one at a time... (you need a hand on the bars)... Grin...
It's usually one of those two things... (sounds just like an engine problem)...
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Ed
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Re: rattling/ vibrating
Reply #2 - 05/11/13 at 14:27:17
 
I did both those checks. it sounds like it is coming from the top of the engine. I went from 5W30 oil to 10W40, then to 20W50. I'm wondering if that could cause a problem?
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Re: rattling/ vibrating
Reply #3 - 05/11/13 at 14:42:40
 
How long did you run 5W30 as its a car oil and not good for the wet clutch not to mention that it is way weak in ZDDP anti wear additives. A good 10w40 that meets the JASO specs  and has a high dose of anti wear additives is what you need.
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Ed
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Re: rattling/ vibrating
Reply #4 - 05/11/13 at 20:30:45
 
5W30 is what was in there when I bought it. I have no idea how long it was in there. Should I switch from 20W50 back to 10W40?
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Re: rattling/ vibrating
Reply #5 - 05/11/13 at 22:04:43
 
20W50 is fine for summer,... switch to 10W40 for winter...
10W40 is fine for year round... (20W50 may help with extreme heat)...
...(I don't bother,... if it's that hot, I ain't goin' far for long)... Grin...
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Ed
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Re: rattling/ vibrating
Reply #6 - 05/14/13 at 15:03:29
 
I'm still having the rattling issue, and it has gotten worse. Any other suggestions?
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Re: rattling/ vibrating
Reply #7 - 05/14/13 at 15:14:31
 
gas cap?

Mine rattles a lot. Stops when i press on it. Still figuring out a fix....
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Re: rattling/ vibrating
Reply #8 - 05/14/13 at 15:19:33
 
Nah, if it was the gas cap or the headlight or something I wouldn't be so worried. When I get off the bike and listen for the noise, I hear it coming from the top of the engine.
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Re: rattling/ vibrating
Reply #9 - 05/14/13 at 15:42:51
 
i had a rattle that i thought was coming from the engine when i reved it up. turned out to be the left side cover. sounded like something bad in the top end though. scary sounding stuff.
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Re: rattling/ vibrating
Reply #10 - 05/14/13 at 15:47:45
 
Maybe the chrome head side cover? Something in the decomp mechanism? Not much else there that isn't inside.
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Re: rattling/ vibrating
Reply #11 - 05/14/13 at 15:54:47
 
headlight, speedo, mirror, pulley cover, drive pulley nut... those are the usual suspects, but the list goes on and on and on and...

run your free hand around and grab hold of anything that's not supposed to be moving.
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Re: rattling/ vibrating
Reply #12 - 05/14/13 at 16:22:00
 
Ok, it's not outside, we'll go inside,.....what about a cracked piston ?
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Ed
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Re: rattling/ vibrating
Reply #13 - 05/14/13 at 16:42:38
 
I took off both head covers and make sure everything on the cylinder head was tight. it all is. How do I find out if the piston is cracked?
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Re: rattling/ vibrating
Reply #14 - 05/14/13 at 19:27:56
 
Could it be the rocker arms?
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