Deep Water stalling - which carb vent hose to route "up
Posted: 03:05 pm Apr 26 2010
by ihatefalling
Hey guys....doing the AMA Renfro Valley ride this weekend. Anyone else going?
Expecting some deep water crossings. I know there's a carb vent hose that can get water in it when crossing deep water....thus causeing the bike to stall. Can you tell me which one it is? Real plain talk too....like "Back of carb, drivers side, lower hose" if you don't mind.
Or maybe even post a pic
I DO NOT want the old gal stalling when going through water like this...
go to 2:30
Posted: 03:47 pm Apr 26 2010
by Slick_Nick
That water crossing is SWEET! Looks like the water was moving pretty fast too!
I think you just run the two lines from the top of the carb up into the airbox. The last one is just for the float bowl drain.
Posted: 03:54 pm Apr 26 2010
by RBD
It is my opinion that the carb vents (all) should go down and unobstructed after it leaves the carb. If you run the vents up, gas can get trapped in them and this can cause stalling.....
Ron
Posted: 04:08 pm Apr 26 2010
by ihatefalling
RBD wrote:It is my opinion that the carb vents (all) should go down and unobstructed after it leaves the carb. If you run the vents up, gas can get trapped in them and this can cause stalling.....
Ron
I thought about that too. Seems like maybe you could put a " T " fitting real close to the carb (high above water), and then you can vent up and down....
Well, this all goes back to a problem I've had of sometimes stalling when going through somewhat deep water (1.5 - 2 feet). SOmeone told me I was stalling because those vent hoses were getting blocked by the deep water. ANy other feedback? The drain on the bottom my airbox seems pretty tight....no water getting in there.
Posted: 04:27 pm Apr 26 2010
by Indawoods
Some guys just run them into the airbox....
Posted: 04:50 pm Apr 26 2010
by scheckaet
I run all of them but the carb overflow in the air box, never seem to have any issue.
Posted: 05:51 pm Apr 26 2010
by Slick_Nick
I didn't think you could run them up now that I think about it. When I get gas in those lines if I hold them above the carb, they won't drain out, like there's a check valve in there or something. I think Ron is right, they need to be down in order to work.
Posted: 06:03 pm Apr 26 2010
by canuckhybrid125
I had one of those filters that hooks up to the vent lines and they kept filling up with gas,so I took it off.
Posted: 04:38 pm Apr 27 2010
by dfeckel
I wonder if the fuel starvation with the underwater vent hoses applies only to carbs with the four vent lines?
