Another Heat Thread

[Craniac]

Went for 230 miles ride today. 93 when I left 107 when I got home. Tried to take a video of the raw fuel vapors gushing out of the overflow hose. But the video isn't real clear. So I placed a dirty plastic container under the hose. Checked it about 20 minutes later and it had raw fuel. Checked again in another 20 minutes and the fuel had evaporated.

BRP told me that my case had been referred to a "senior rep". Still waiting to hear from him/her. thought I should get some proof of the problem so I took a pic.

 

[Craniac]

The liquid is the raw fuel that dripped from the overflow. The dirt in the container helped make the fuel more visible. There were also several drips on the floor.
I know 107 is on the "hot" side, but it happens often around here. Before I started making heat mods, the bike would spew fuel at 75 degrees.

Hope to hear from BRP soon.


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[Bob Denman]

:shocked: Is it as problematic at lower temperatures; the way it once was? :dontknow:
What temperatures need to be reached, before this starts happening?

 

[Craniac]

Somewhere around 95. I had the bike in for some warranty work and the tech told me the bike was supposed to vent fuel. He implied that mods would void the warranty.
I would think that a 25 degree improvement would help.


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[Bob Denman]

It sounds as if a move North might just solve the rest of this for you... :joke:

 

[TXSHOTGUN]

i have a 2013 rt limited. I have the same heat issues that everyone else has. I added a sheep skin seat cover and it helped alot. I also have the gas boiling syndrome down here in Texas which caused me annoyance and bad fuel mileage. I started adding Lucas ethanol stabilizer. I use an oz per fill up and i don't smell the raw gas and went from 28mpg to 34mpg. Have been using it in my Harley, wifes goldwing and my Nomad for a couple years without any problems.
A friend put me onto this additive, he has a rental business and has lots of small engines to take care of. He was constantly burning his small engines up and hadn't had the problem till our area started adding the ethanol to the fuel. He sells test kits and i was surprize to see some fuels had as much as 30% added to the gasoline.

Just thought i would share.

 

[Chupaca]

Well..!!

considering that the fuel was vaporized and venting out things were working. If you put the spout of a boiling kettle near a glass it condenses to water if you don't it evaporates into the air. Same idea applies to venting the fuel. Low levels of fuel boil fast and in the heat you mention could make this worse as well as over filling. Just a point of view not picking sides...:dontknow:

 

[3 Wheel Addict]

Mine would do this at temps in the low 80's. The dealer replaced the charcoal canister once but it still did it. The fumes spewing out of the hose are hot enough to burn you.

 

[Craniac]

considering that the fuel was vaporized and venting out things were working.

The charcoal canister is supposed to trap the vaporized fuel. Then when the engine supplies a vacuum, the stored vapors are sent to the intake manifold where they are burned.

The system is not adequate as designed. There is obviously a problem. I believe the manufacturer should address the issue.

Liquid fuel does not burn. It must be vaporized first. (Yes, I know that liquid fuel will burn on the surface.) But the vaporized fuel coming out of the overflow hose is VERY flammable. One spark from static electricity and say good bye to the bike.

Fuel boiling in the gas tank is an accident waiting to occur.

 

[Magdave]

The charcoal canister is supposed to trap the vaporized fuel. Then when the engine supplies a vacuum, the stored vapors are sent to the intake manifold where they are burned.

The system is not adequate as designed. There is obviously a problem. I believe the manufacturer should address the issue.

Liquid fuel does not burn. It must be vaporized first. (Yes, I know that liquid fuel will burn on the surface.) But the vaporized fuel coming out of the overflow hose is VERY flammable. One spark from static electricity and say good bye to the bike.

Fuel boiling in the gas tank is an accident waiting to occur.

Part of the problem I have been told is the purge valve does not open until 5-6k rpm. I do not have verification of that but what I do now is tach it up to there for a minute before parking in the garage as well as filling the tank just prior to going home. It is better but not completely gone. If anyone can verify the purge opening RPM please do. :thumbup: