Join Date: Nov 1999
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Re: Weber Carb
Well, i would have to disagree with the requirement for a pressure regulator. I have been running my Weber for about 10 years without one, and it runs pretty well on sidehills, and amazingly well on steep inclines, you know, the ones so steep you have to step on your rear tire to get in or out of the drivers seat!
With the fuel return line on the filter, anytime the needle valve in the carb is closed, or even partially open, excess fuel is going to return to the tank. I could see where a FPR would help in situations where the return line or filter had some type of problem.
However, the Weber does have a widespread problem with running to rich on steep inclines. About 2 years ago, a bunch of people from all over put our collective heads together to solve this and formed what we called "The Weber Club"
First off, let's understand that Jeeps and the type of terrain we see are not what Webers are designed for-they are typically sport car carbs. Sports cars see alot of heavy accelleration, which requires a high float level.
Several of us found that by lowering the float level the tendancy to run rich or flood is eliminated. I lowered mine progressivly a couple of millimeters at a time(for the 38, the float level started out at 40mm closed, 50mm open) I think I went down to 35 and 45.
The difference is amazing. People think my Jeep is fuel injected because of the inclines I keep it running on!
Bob in MA