Fuel In Tank "Boiling"

[Latemarch]

Vapor lock has become pretty much a thing of the past, with the submerged high pressure fuel pumps that fuel incection systems need. Yes, it can happen, but it is very uncommon and is usually the result of a failing or fail;ed component in the fuel system, like a weak pump or a plumbing leak or blockage.

:agree: I was wondering if the fuel in the fuel lines could boil after shut-off. Since the vapor couldn't exit via the injectors it might bubble up from the fuel pump giving the impression that the fuel was boiling in the tank.

On start up the high pressure pump would rapidly fill the fuel lines, i.e. no vapor lock.

 

[scudrunner]

Jornie, how in the world could you forget about molecular chains C[SIZE=-2]7[/SIZE]H[SIZE=-2]16[/SIZE] through C[SIZE=-2]11[/SIZE]H[SIZE=-2]24 ? I'm shocked and appauled... :roflblack: :roflblack:[/SIZE]

I guess as we get older, we tend to forget the important stuff. Just the other day I realized that I had forgotten the Alamo!:gaah:

 

[SNOOPY]

On another of the forums a couple of owners have smelled gas after a 70mi ride and on opening the tank have seen it "boiling". One owner that saw this has a brand new RT with only 200mi or so on the machine.

While it's certainly possible to boil gasoline it just seems unlikely that that is what is happening. Is there any way that there could be a vent tube or something to do with the fuel pump that would cause it to bubble air or vapor up thru the gasoline?

I'll admit that I've never opened the tank after a long ride when I could see the fuel as it was always way down there and I was refueling......maybe they all do it :yikes:

I see this boiling problem goes way back...... :banghead:


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