Racing Fuel Systems

Has anyone seen it necessary to modify the size of the accelerator pump discharge holes? It seems most of them are around .025. I've never changed them myself and it doesn't look like you can reverse any changes you might try.

Maybe on an all out class engine, but because of the small primary venturi and air demand operated secondary door usually not needed.

Thanks Mark!

I always very slightly open the them, it helps to keep them from getting plugged shut. It doesn’t take much debris to cause an issue.