Vapor lock?

Xeno
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Xeno
Edited Date/Time 1/31/2016 10:06am
Really? When does that happen at this level?
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Motodave15
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Motodave15 1/30/2016 9:21pm
1/30/2016 9:21pm
Heat, and revving the piss out of your bike
GeorgiePorgie 1/30/2016 9:21pm
1/30/2016 9:21pm
Lots of dumbgdeon threads being added tonight
FGR01
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FGR01 1/30/2016 9:21pm
1/30/2016 9:21pm
..and since when does "gas cap vapor lock" cause the engine to belch smoke?
Juss
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Juss 1/30/2016 9:22pm
1/30/2016 9:22pm
What does this level have to do with anything? Bummed for the kid!

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Derpin' DJ
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Derpin' DJ 1/30/2016 9:23pm
1/30/2016 9:23pm
"It's alright honey, it was just vapor lock"

seth505
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seth505 1/30/2016 9:24pm
1/30/2016 9:24pm
Looked like some shitty smoke comin out of the exhaust...
mxrose3
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mxrose3 1/30/2016 9:25pm
1/30/2016 9:25pm
My son's 14' YZ450 did that one time when it was brand new. It just cut off and wouldn't start. Removed the fuel cap, and it started right up. The cap on the YZ's has an integrated one-way valve.
GeorgiePorgie 1/30/2016 9:26pm
1/30/2016 9:26pm
Probably smoking because it needed more fuel to burn. No fuel getting to the FI?
Grizz
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Grizz 1/30/2016 9:29pm
1/30/2016 9:29pm
mxrose3 wrote:
My son's 14' YZ450 did that one time when it was brand new. It just cut off and wouldn't start. Removed the fuel cap, and it...
My son's 14' YZ450 did that one time when it was brand new. It just cut off and wouldn't start. Removed the fuel cap, and it started right up. The cap on the YZ's has an integrated one-way valve.
Happened to me on a TTR before. Breather hose was pinched.
Xeno
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Xeno 1/30/2016 9:29pm
1/30/2016 9:29pm
I'm glad he went back on the track to finish the race. Some guys would have thrown the bike down and cried.
RonJon516
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RonJon516 1/30/2016 9:30pm
1/30/2016 9:30pm
I thought it was funny that Webb knew the problem, not his mechanic haha
VET176
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VET176 1/30/2016 9:33pm
1/30/2016 9:33pm
Happened to me before. Bike died in the 2nd corner. Forgot to turn the gas on.
brewrabb
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brewrabb 1/30/2016 9:33pm
1/30/2016 9:33pm
RonJon516 wrote:
I thought it was funny that Webb knew the problem, not his mechanic haha
Yes, Cooper showed great poise and maturity.
Zesiger 112
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Zesiger 112 1/30/2016 9:34pm
1/30/2016 9:34pm
FGR01 wrote:
..and since when does "gas cap vapor lock" cause the engine to belch smoke?
Probably heat build up in the cylinder and exhaust. I've seen bikes smoke after they've been running. It must have been the gas cap if that's what got it running again. If the bike had locked up they wouldn't have gotten it back on the track.

I was very impressed by webbs composure durring the situation and durring the interview after. He knows he's still got it covered. Champ material for sure.
GeorgiePorgie 1/30/2016 9:35pm
1/30/2016 9:35pm
Anyone that's had that happen remembers it. My pitbike would do it.
usafwx
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usafwx 1/30/2016 9:38pm
1/30/2016 9:38pm Edited Date/Time 1/30/2016 9:38pm
Gas becomes vapor from extreme heat, bike dies. Could see this happening at this level, those engines are far from what you find on the showroom floor.
seth505
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seth505 1/30/2016 9:58pm
1/30/2016 9:58pm
Zesiger 112 wrote:
Probably heat build up in the cylinder and exhaust. I've seen bikes smoke after they've been running. It must have been the gas cap if that's...
Probably heat build up in the cylinder and exhaust. I've seen bikes smoke after they've been running. It must have been the gas cap if that's what got it running again. If the bike had locked up they wouldn't have gotten it back on the track.

I was very impressed by webbs composure durring the situation and durring the interview after. He knows he's still got it covered. Champ material for sure.
Ya, he pretty much reacted perfectly. Still confident and didn't give any other rider something to build off.
bish153
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bish153 1/30/2016 9:59pm
1/30/2016 9:59pm
usafwx wrote:
Gas becomes vapor from extreme heat, bike dies. Could see this happening at this level, those engines are far from what you find on the showroom...
Gas becomes vapor from extreme heat, bike dies. Could see this happening at this level, those engines are far from what you find on the showroom floor.
Somebody did some googling real quick...

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ML512
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ML512 1/30/2016 10:01pm
1/30/2016 10:01pm
bish153 wrote:
Somebody did some googling real quick...
Somebody isn't very nice tonight...
usafwx
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usafwx 1/30/2016 10:04pm
1/30/2016 10:04pm Edited Date/Time 1/30/2016 10:05pm
bish153 wrote:
Somebody did some googling real quick...
Nope, actually familiar with this, have a small engine repair degree/cert. paid for by AF when I was bored stationed in AZ, but Cooper could also be summarizing/generalizing what actually happened, could be another gas/engine related issue. But sounds like it based on removing the gas cap solving it. I did google the definition of a douche after your response. Jk.
bish153
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bish153 1/30/2016 10:07pm
1/30/2016 10:07pm
bish153 wrote:
Somebody did some googling real quick...
usafwx wrote:
Nope, actually familiar with this, have a small engine repair degree/cert. paid for by AF when I was bored stationed in AZ, but Cooper could also...
Nope, actually familiar with this, have a small engine repair degree/cert. paid for by AF when I was bored stationed in AZ, but Cooper could also be summarizing/generalizing what actually happened, could be another gas/engine related issue. But sounds like it based on removing the gas cap solving it. I did google the definition of a douche after your response. Jk.
Put my foot right in my mouth...
usafwx
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usafwx 1/30/2016 10:10pm
1/30/2016 10:10pm
bish153 wrote:
Somebody did some googling real quick...
usafwx wrote:
Nope, actually familiar with this, have a small engine repair degree/cert. paid for by AF when I was bored stationed in AZ, but Cooper could also...
Nope, actually familiar with this, have a small engine repair degree/cert. paid for by AF when I was bored stationed in AZ, but Cooper could also be summarizing/generalizing what actually happened, could be another gas/engine related issue. But sounds like it based on removing the gas cap solving it. I did google the definition of a douche after your response. Jk.
bish153 wrote:
Put my foot right in my mouth...
Wink Cheers
tvo314
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tvo314 1/30/2016 10:10pm
1/30/2016 10:10pm
Cooper handled that very well. I'm sure he'll be back with a vengeance.
nascarnate326
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nascarnate326 1/30/2016 10:11pm
1/30/2016 10:11pm
If Yamaha used a standard gas cap like normal would it have been a problem? I'm not familiar with those bikes and havnt had an issue on my Hondas.
bish153
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bish153 1/30/2016 10:11pm
1/30/2016 10:11pm
bish153 wrote:
Somebody did some googling real quick...
ML512 wrote:
Somebody isn't very nice tonight...
Sorry...to much zing zang accompanied with Stewart's night!
usafwx
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usafwx 1/30/2016 10:13pm
1/30/2016 10:13pm
nascarnate326 wrote:
If Yamaha used a standard gas cap like normal would it have been a problem? I'm not familiar with those bikes and havnt had an issue...
If Yamaha used a standard gas cap like normal would it have been a problem? I'm not familiar with those bikes and havnt had an issue on my Hondas.
It still has a vent hose like other bikes, just cap is hidden, I rode a 12,15 and 16 but realized 2 strokes are where its at Wink if anything a cooling issue with the bike or gas, makes me think back to boiling gas during dungey's outdoor 250F outdoor season.
blackdiamond
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blackdiamond 1/30/2016 10:18pm
1/30/2016 10:18pm
Xeno wrote:
Really? When does that happen at this level?
It doesn't.

Kudos to Coop for a smooth, politically correct cover-up on what appears to be yet another 15,000 rpm fooper failure. The blue death smoke implies a bit more of a problem than vapor lock?

Just my 2 cents...
skippy mcdermott 1/30/2016 10:20pm
1/30/2016 10:20pm
Bikes don't vapor lock in 12 minutes at 50 degrees ambient. Yamaha's have had their share of mystery bogs and cut outs due to wiring harness issues since 14. Watch in the pits- some blue teams remove the body work and wash most of the bike by hand to avoid introducing water to the harness. I know if one team that resorted to removing the harness every time they washed the bike. He's lucky it happened coming out of a corner and not on the face of a jump.
Xeno
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Xeno 1/30/2016 10:22pm
1/30/2016 10:22pm
But he rode it across the finish line- so it didn't grenade.
h&m_cycle
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h&m_cycle 1/30/2016 10:23pm
1/30/2016 10:23pm Edited Date/Time 1/30/2016 10:24pm
That's something how Cooper said "I'm no quitter" then started the bike and rode off to show it didn't grenade...

Yamaha had a commercial on shortly after that...Laughing

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