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Tech Tips
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accelerator pump adjustment on Holley
Changed accelerator diaphrams on my Holley double pumper. I am wondering on how to set up the pump levers. Should the spring mechanism just rest on the the Acc. pump actuating arm or should they engage the diaphram at all. Make any sense? Any help would be greatly appreciated. Thanks Brandon.
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| Rick Parker |
09-09-2006 02:17 PM |
The lever should rest on the diaphram and on the end of the bolt head of the adjusting screw with the actuating lever in contact with the plastic cam on the throttle shaft. When properly adjusted, fuel should be emitted from the accelerator pump nozzels with the slightest movement of the throttle shaft. However, with the throttle fully open, the accelerator pump adjusting screw & spring should be adjusted so that a .015 feeler guage can be inserted between the adjustor bolt head and lever to prevent the entire accereator pump mechanism from being "bottomed out" or damaged by over travel.
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