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Re:weird sound after shutdown?
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TOPIC: Re:weird sound after shutdown?
#705555
brianmac (User)
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weird sound after shutdown? 4 Years, 3 Months ago  
when i turn the bike off, sometimes it goes like shooooo cuh cuh. wasssupppwiddat? anybody know? too lean? issue with compression release?
2005 1700roadie midnigh silverado(not eldorado)
 
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#705557
jd750ace (User)
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Gender: Male jd750ace Location: Waxahachie Texas Birthdate: 1969-10-30
Re:weird sound after shutdown? 4 Years, 3 Months ago  
Just the pistons pushing back down when it stops on partial compression. Normal noise. My XS650, with the 360 degree twin (both pistons rise and fall together) makes a groaning noise when it does it.
 
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#705558
B L U E (User)
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Re:weird sound after shutdown? 4 Years, 3 Months ago  
NORMAL on a Roadstar
 
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#705561
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Re:weird sound after shutdown? 4 Years, 3 Months ago  
Shooo ca ca. Sounds like what you get when you step in dog crap.
 
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#705565
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Re:weird sound after shutdown? 4 Years, 3 Months ago  
Did the sound resemble something you would hear when turning the burners off on a gas grill?

Mine was making a sound similar to that when I was dialing in my idle and had it a little high.
 
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#705566
Curt (Moderator)
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Re:weird sound after shutdown? 4 Years, 3 Months ago  
May be a little off on your jetting but nothing to worry about. I would bet you don't have many miles on the bike yet and it tends to go away after you get more miles on the bike. It is caused by the piston not completing the compression stroke and it has unburned gas in the cylinder and exhaust pipe so the piston starts back down from the gas pressure. You can get ba poof sound if the gas vapors light off from the heat in the pipes and cylinder. Lind of like trying to run backwards.
 
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#705699
brianmac (User)
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Re:weird sound after shutdown? 4 Years, 3 Months ago  
it has 16K miles, it does not always do it, i figured it was just normal. i have stock jets, filter, exhaust. PMS by maxair. i can adjust on the fly with a knob.
 
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#715497
BikerRon (User)
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Re:weird sound after shutdown? 4 Years, 2 Months ago  
When mine kicks back on a compression stroke after shut down it engages the one way bearing in the starter clutch and spins the starter backwards for a sec.

Doesn't hurt any thing.
 
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#715516
MidStar07 (User)
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Re:weird sound after shutdown? 4 Years, 2 Months ago  
BikerRon wrote:
When mine kicks back on a compression stroke after shut down it engages the one way bearing in the starter clutch and spins the starter backwards for a sec.

Doesn't hurt any thing.


Yeah, I think mine does the same thing about 30% of the time....it's actually pretty funny sounding, like a cartoon ricochet sound It's made for some funny arrivals when taking a break on family road trips: "here comes Mike on the Yamaha roaring in, parks next to Eric's Road King, patutty pattuty, click, putter, putt, put, put, basiiiiiiiiiinnnnnnnggggggggg." "I'm here!!!"

Been doing it for most of my 26,500 miles, so I'm not going to sweat it.
 
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#715585
Father_Pobasturd (User)
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Re:weird sound after shutdown? 4 Years, 2 Months ago  
Mine has 53K, and it does the starter kick back thing almost every time I shut it down. I have had other bikes that did the same thing, it's no big deal.
 
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