Gas shoots out of Carburetor !

[Spoo 2]

Does any one know why one of my carburetors shoots gas strait up when I start the engine ? thanks

 

[rixter]

Hello,

Can you provide more information as to which series you have and where the fuel is spewing from? An issue I had as well as others on my series 5 with Strombergs is that a float in one carb was stuck down causing the fuel to exit via the vent hole. See attached photo. This was a matter of debris getting into the carb and clogging the inlet valve. This was before a rebuild, but I also had fuel coming out of the other carb after a rebuild, so dirt can get introduced. Sometimes a float may stick down after sitting in the down position (no fuel in the carbs). A light tap on the side of the card may free this up. In my case though, I dropped the fuel bowls and ensured there was no dirty fuel in there and that the fuel inlet valves operated freely.

Rick

 

[Spoo 2]

Gas shoots out of Carb

Right, sorry. Its a 1962 series 2. Twin Zenith carburettors, I believe. Gas comes shooting strait out of where the "strangler" (choke ) sits over. Like a fountain.
Thanks for your help

 

[rixter]

Those are different than my Strombergs, but I still think it is related to a stuck/damaged float or dirt in the needle seating keeping the float from shutting off the flow of fuel into the fuel bowl. It has to go somewhere.

Rick

 

[Spoo 2]

Thanks rick
I think your right about the float/needle and will get this looked at.
geoff

 

[RootesRacer]

As you suspect, the float/needle/seat is probably to blame.

The fuel is likely being forced out the air bleed/corrector jet.



Are you by any chance running an electric fuel pump? Without a regulator, that will do it.