Acceleration pump

J

JelmerE12-E28

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Now that I drive the E12 for a while after balancing the carbs the car drove pretty good but the hessitation after letting of the gas is still present and got worse after a while. I took of the aircleaner and checked if the acceleration nozzles are squirting. The rear one did but the front one almost did nothing, just some drops. I than installed new skirts on the acceleration nozzles but it almost didn't do anyting. So today I pulled the top of the carburetor again, took the pump out blowed some air trough all the openings that relate to the acceleration pump and replaced the nozzle it self (from a spare carb). It now squirts better but there is not as much resistance and squirt as the rear carburetor pump.

Any suggestions on where to look for?
 
Is there a check ball somewhere in the circuit? It will allow your pump to fill but closes off when you pressurize the pump, forcing the fuel thru the nozzle.
 
Is your linkage pressing down on the pump with the same force as the working carburetor?

Also try swapping the pumps to see if it's the pump or the circuit.
 
No, the rear one takes more force to pump. Ill swap them out and see what the results are. And maybe swapping the check valve (with the ball in it).
 
If needed the linkage rod can be bent to activate the pump earlier in the stroke, or equally with the other carb
 
Well, it is that they front one just takes less force and thus squirts less. I should leak a bit so pressure drops and so less squirt.
 
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