Carb overflow, was fine this morning

[mountainmanVR]

Howdy my 83 VR out of blue decided to have a carb overflow this afternoon.

I ran it yesterday over 100 miles, started & ran this morning. Went out pulled plugs to check, started & over flow on carb 4.

Planned to ride today.

Any thoughts?

[bongobobny]

Most likely the needle valve is not sealing up. Tap it a few times to see if it fixes. Yes, unfortunately a needle valve can just get stuck out of the clear blue sky...

[garyS-NJ]

I had a carb set someone else worked on and he didn't install the little clips on the needle so the floats went up but didn't push the needle. Perhaps you have a piece of smootz in there which can be flushed.. Open the drain screw and drain fuel into a clear container looking for smootz. and then wash fuel through while tapping the carb body.

 

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[mountainmanVR]

Howdy Gary,

 

I just went through these carbs (again)... clean..clean..clean.. inside. I am familiar with the clips in some carbs, these needle valves don't use the clips.

Maybe the bike is psychic... I most likely would have become road splatter if I had rode yesterday.. instead I drove the car... and still was almost toast...