Thermoquad race tune

Have you guys had issues with fuel evaporating thru the bowl vent lines? When i rebuilt the carb last year i check to make sure fuel couldnt leak from the lower wells so i am ruling that out right now....

Seems that after about of week of sitting the bowls are dry since i can hear them fill with fuel when i turn the pump on......

Any thoughts?

A big YUP! I had to install an electric fuel pump to aid in getting the gas up quicker.

Just out of curiosity Kyle, I took a cap from a spray bomb and put about an inch of gas in it one hot humid afternoon and set it on the bench. 24 hours later the cap was bone dry, it had all evaporated in a 24 hour period. The gas we have today is lousy.