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TinCup · 03-12-2018, 12:57 PM

Sounds like the float may be too low. This is a common issue on the Zenith carb which is why in 1932 the float design was changed so that the float was perpendicular to the car not inline. When you are braking you are changing the level of the float. You can be starving the car for gas when you brake hard. Lots of things to check here.

1. Does the car idle well?
2. What is your GAV setting when driving?

If you gas cap was not venting it will have trouble running anytime. Drive it around with it off and see what it does. Try opening the GAV another quarter turn and see what that does to your stalling.

Removing the secondary well is not the solution.

03-12-2018, 12:57 PM	#2
TinCup Senior Member Join Date: May 2010 Location: OKC / Tonkawa, Ok. Posts: 1,977	Re: Zenith carb stall Sounds like the float may be too low. This is a common issue on the Zenith carb which is why in 1932 the float design was changed so that the float was perpendicular to the car not inline. When you are braking you are changing the level of the float. You can be starving the car for gas when you brake hard. Lots of things to check here. 1. Does the car idle well? 2. What is your GAV setting when driving? If you gas cap was not venting it will have trouble running anytime. Drive it around with it off and see what it does. Try opening the GAV another quarter turn and see what that does to your stalling. Removing the secondary well is not the solution. __________________ Oklahoma City Model A Restorers Group.