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Sep 8th, 2008, 8:06 am
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#1 (permalink)
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Member
Join Date: May 2008
Location: Palm Coast, FL, USA
Posts: 34
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gas tank pressure
Just curious if this happens to anybody else. When you turn your gas cap and then pull up to remove it...is there a tremendous amount of suction? When I go to take my cap off I really have to pull on it and the noise of the pressure it quite loud. Never had a bike that has done that before. Is this typical on the hyper?
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Sep 8th, 2008, 8:13 am
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#2 (permalink)
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Senior Member
Join Date: Jun 2008
Location: athens, , greece
Posts: 294
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no it's not,i would check the tubes if they are blocked in anyway
__________________
Riding enjoyment means lightweight motorcycles. Weight is something of an obsession for us.- Claudio Domenicali
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Sep 8th, 2008, 8:25 am
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#3 (permalink)
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Junior Member
Join Date: Sep 2008
Location: San Jose, CA, USA
Posts: 14
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mine did that a little when it was 100 degrees outside, but since I removed the smog canister, it has not done it since.
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Sep 8th, 2008, 10:48 am
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#4 (permalink)
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Senior Member
Join Date: Jun 2008
Location: Pasadena, CA, USA
Posts: 222
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Mine does that too. I wasn't the one that took off the canister, so, I guess I should look at the routing and see if one of the lines should be unplugged.
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Sep 8th, 2008, 11:20 am
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#5 (permalink)
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Senior Member
Join Date: Jul 2007
Posts: 1,259
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Mine did it with or without the canister but it doesn't seem to be temperature related. Sometimes there's quite a bit of pressure, other times there's hardly any. It's not the same on any given day or with any temperature. Maybe the breather valve is bad?
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Sep 8th, 2008, 11:23 am
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#6 (permalink)
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Senior Member
Join Date: May 2008
Posts: 805
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No that has never happened to me. Before or after removing the canister.
__________________
Current Rides:
2008 Ducati Hypermotard 1100
2006 Kawasaki KLX250S
2004 Honda CBR600RR
2002 BMW R1150R
1996 Ducati 900SS/CR
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Sep 8th, 2008, 11:27 am
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#7 (permalink)
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Senior Member
Join Date: Jan 2008
Location: Orlando, FL, USA
Posts: 166
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...
not sure of the cause but I agree with Friggin Mark.
every other time it is like opening a bottle with pressure change...pffffttttt!
__________________
JCB
2010 1198
Full Termi, DP Race Seat, SpeedyMoto Clutch Cover & Plate, Pazzo Levers, EVR Clutch Slave
2008 HM-S Black (sold and miss it...)
DP Full 2-1 Termi, DP Race Seat, Pazzo Levers, Scotts Damper, MotoVation Sliders, DP Carbon Parts
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Sep 8th, 2008, 3:19 pm
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#8 (permalink)
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Home of vortex tuning
Join Date: Nov 2007
Location: Sedona, AZ, USA
Posts: 1,559
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Mine does it occasionally after running a couple of minutes to the gas station, cold startup, stored in the house. I have temps over 100 here, doesn't seem related, cannister removed.
__________________
My home "Wayward" in Morro Bay Ca.
Transmitting throughout the cosmos from my 'Pod
Hammerin' Honda 90's 'round Lake Berryessa since '67
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Sep 8th, 2008, 7:57 pm
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#9 (permalink)
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Member
Join Date: May 2008
Location: Palm Coast, FL, USA
Posts: 34
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Dealer checked it out. Turns out my charcoal canister was full of gas. They removed the canister and the bike runs good now. Idles seems lower than before, around 1200-1300 instead of 1250-1350. But, it's running good so I'm happy for now. Bike has been in the shop a total of 19 days so far, so hopefully it doesn't have to go back.
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Sep 9th, 2008, 12:11 am
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#10 (permalink)
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Junior Member
Join Date: Jul 2008
Location: Chicago, IL, United States
Posts: 25
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how does that happen? you always overfilling your gas tank?
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