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Is this pukeiing? HELP
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TOPIC: Is this pukeiing? HELP
#310271
twowheeltherapy (User)
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Is this pukeiing? HELP 7 Years, 5 Months ago  
On a road trip in Albuquerque (trailered here--no jabs). Each afternoon when I stop, it won't restart Gas is leaking out the bottom of the air filter or behind it). Eventually it stops leaking but won't restart. I shut off gas wait 5 minutes, try again and eventually it starts. What is this? What is the fix? I have 3 more day rides planned. Will this leave me stranded? Temp fix? '01,1600, 48k flawless miles. Will check ur answrs in a.m.
 
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#310277
Curt (Moderator)
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Gender: Male curt.switzer@outlook.com Location: The Colony, Texas Birthdate: 1943-11-24
Re:Is this pukeiing? HELP 7 Years, 5 Months ago  
Temp fix is shut the gas off and let it run for a little bit so the bowl isn't full. Sounds like the flot is stuck or doesn't seal good when full. If you have it trailered it could be from the traler bouncing around causing the float to bounce in the bowl.
 
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#310278
davej (User)
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Re:Is this pukeiing? HELP 7 Years, 5 Months ago  
If I was out of town and wanted to ride without worry . I would turn off the gas and let it run a bit before shutting it off. As long as it runs ok while riding have fun!! It might be puking or it could be a sticking float/needle/seat. Unless you want to tear into the carb, work around what you have until you get home.
 
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Last Edit: 2010/09/19 20:57 By davej.
 
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#310297
Ratl (User)
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Re:Is this pukeiing? HELP 7 Years, 5 Months ago  
Two, I live in Albuquerque. We are at 5,600 feet above sea level, so the air is a lot thinner here. The result of that is that your bike may be running a little hotter than you are used to.

Current puking theory seems to be that the fuel heats up in the full fuel line between the pump and the carb when you shut her down from all the heat between the jugs. As the fuel expands, it has to go somewhere and it can't go back through the pump, so, it forces itself past the float valve and out the back of the carb through the over flow.

There are a number of theories purposed by several individuals here. I am not going to address those but to say that for me, when I had my pump and my bike was puking, I found that the method Curt mentioned, worked as a stop gap. I would shut the fuel petcock off about 20 - 30 seconds before I shut her down. It didn't work 100%, probably more like 80 - 90% of the time. Enough to keep using that method though. Because there is less fuel in the line or the bowl, or both, boil over occurs less. It will probably work for you also, until you find another way or just go pumpless. That's what I found finally worked for me.

Since you are here in Albuquerque, if you have any issues you need help with, I have tools and a lift in case you need a hand. Just let me know. I check in several times a day.

There are some truly amazing rides around here, enjoy yourself.

Ratl.
 
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#310309
greenpus (User)
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Re:Is this pukeiing? HELP 7 Years, 5 Months ago  
twowheeltherapy wrote:
On a road trip in Albuquerque (trailered here--no jabs). Each afternoon when I stop, it won't restart Gas is leaking out the bottom of the air filter or behind it). Eventually it stops leaking but won't restart. I shut off gas wait 5 minutes, try again and eventually it starts. What is this? What is the fix? I have 3 more day rides planned. Will this leave me stranded? Temp fix? '01,1600, 48k flawless miles. Will check ur answrs in a.m.
My 2001 does it all the time when the outside temp is in the high 90's. Once I figured out what the deal was it wasn't a prob to start the bike for me. I would usually tilt the bike to the right so the gas ran out of the carb/aircleaner and off the engine and then hit the starter and the bike started right up.
I got used to it
My fix was to stop buying gas that had alcohol in it. Most gas has ethanol blended and most states require a label on the pump stating it has ethanol but not all states require it. as a short term fix, see if you can find gas stations that do not have the label and fill up there.
it won't leave you stranded. Just make sure no one smokes a cig around your bike
 
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Last Edit: 2010/09/20 05:50 By greenpus.
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#310311
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Re:Is this pukeiing? HELP 7 Years, 5 Months ago  
Well if it is just a float adjustment, you can do this pretty easy.
http://weislake.com/sig/mucker/carb/carbfloat/carbfloat.htm
Provided it has screws in the bowl other than factory.

IMHO I call this a throwup, a puke is a small amount of gas that burps out the carb 2 to 5 min after shutdown when hot.

The throwup is a puke followed by a stuck float, so when you turn on the key gas pours out the overflow soaking your engine and flooding the bike to a hard or no start.

Try the shut off before you land thing, but when you re start, turn the fuel on just a crack, start and when it gets running then turn it on all the way.

The link has pics on how to adjust float on the side of the road with no tools other than what is in your kit. I use this method all the time it's so good.

If this continues after you get home, study up on going pumpless, doing that allows the fuel to expand back up and into the tank rather than forced out the overflow.

Yamaha recalled the handlebars cause they don't want to see you crash. Burning to death is none of their concern though.
 
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#310315
scottw (User)
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Re:Is this pukeiing? HELP 7 Years, 5 Months ago  
greenpus wrote:
twowheeltherapy wrote:
On a road trip in Albuquerque (trailered here--no jabs). Each afternoon when I stop, it won't restart Gas is leaking out the bottom of the air filter or behind it). Eventually it stops leaking but won't restart. I shut off gas wait 5 minutes, try again and eventually it starts. What is this? What is the fix? I have 3 more day rides planned. Will this leave me stranded? Temp fix? '01,1600, 48k flawless miles. Will check ur answrs in a.m.
My 2001 does it all the time when the outside temp is in the high 90's. Once I figured out what the deal was it wasn't a prob to start the bike for me. I would usually tilt the bike to the right so the gas ran out of the carb/aircleaner and off the engine and then hit the starter and the bike started right up.
I got used to it
My fix was to stop buying gas that had alcohol in it. Most gas has ethanol blended and most states require a label on the pump stating it has ethanol but not all states require it. as a short term fix, see if you can find gas stations that do not have the label and fill up there.
it won't leave you stranded. Just make sure no one smokes a cig around your bike

=======================================================================================================

Thats because the alcohol/ethenol in the fuel reduces the boiling temp of the fuel so when fuel ine inbetween cyls and flaot bowl of carb are overheated the fuel then boils changing it from a liquid to gas state . Then in gas state fuel pressure is increased in fuel system pst point of when needle & seat can hold it and then fuel blows out past needle & seat out of carb all over the place flooding the motr at times too.

I could actually hear the fuel bubbling/boiling in the carb on my bike esp with winter blend fuel that lowers the fuels boiling point even more then the ethenol it self.

So hearing the fuel boiloing in my catrbs float bowl just post hot shutdown confirmed for me the fuel was in fact boiling even though many here dont believe that theory.

The temp fix to always have to remember to turn fuel off just prior to shutdown is a temp fix which i didnt want to deal with,i wanted to fix it for good with my bike often puking fuel post shut down hot,it was a pretty bad case,puked all the time with f-pump off.

So my fix was to properly insulate(which is key to not do half assed job) the metal fuelline inbetween cyls ,flaot bowl on carb and main carb you can insulate without hindering throttle cables etc and that fixed if .

I have put on 5,500 miles since doing that and have ridden in 100+ deg HHH NY temps and no carb puke anymore even with ethenole'd fuel thats the only avail fuel in my area.

The reason why carb puke stops most times when people go pumpless is removing stock fuelpump and often going with smaller aftermarket aircleaner/filter assmebly opens up a lot more area for increased airflow/better cooling reducing fuel system temps and temps inbetween cyls where metal fueline goes & thats why carb puke stops in that case & not really from not having an ele f-pump anymore. My bike puked every time with ign off andf f-pump not running.

This is the real deal fix for true carb puke and not to fix a carb with with dirt in it causing neeld & seat to hang up ,or incorrect float lvl setting,or bad flaot taking on fuel cuasing flooding .

I have done this fix to 2 other r*s with 100% success on 3 R*'s in a row,alos had a few people here in RSc try it with good results too so i now it works.

Scott
 
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