Weber Experts

[Gaz64]

If you remove one emulsion tube from each carb, you then measure and compare the fuel level in the main wells to see if one side is higher than the other.

Floats should also be the same weight.

[Gaz64]

Originally Posted by Gaz64

If you remove one emulsion tube from each carb, you then measure and compare the fuel level in the main wells to see if one side is higher than the other.

Floats should also be the same weight.

Sorry if misleading, but I have said remove ONE tube from each carb.

Meaning remove the front tube from all carbs, it is only as a comparison test and is in no way indicative of the "true" fuel level since the level will drop with tube removal.

If after a test like this (which takes a fraction of the time compared to float level checking) there's a difference then you'll know which path to take.

The theory of equal throttle angle also has merit.

If half of the engine spends more average time at 25% and the other half at 20% and the engine is making "x" torque at that point, then the engine half at 25% is in a lower vacuum state (more load) than the 20% side.

The 20% side is "loafing along" for the ride, the 25% side is doing greater than 50% of the work.

The reverse could also be true if the idle circuit is too fat.

[Snakebit]

Thanks for the replys. I'll check the floats, but I think it is a linkage issue. It appears both carbs on the same side are in sync, but not in sync with the other side.