Not Ranked
There is a recommended adjustment that can be made to your accelerator pump arm to neutralize any vibration dribbling. I live on a 1.5 mi. gravel road that is usually severely washboarded, and have experienced this problem with my 750DP.
You can find the adjustment procedure on the Holley website under the Carb Technical section.
Briefly, you adjust the preload of the pump arm off the cam to about .010 freeplay by feeler guage before it begins to activate the accel pump lever. That's what the spring and nut assembly is for.
I found I had to tweak it a few times to get the best compromise of pump stroke to freeplay. Like anything else on a Holley - adjustment, trial & error.
Tim
|