[Tom Vaught]

Clicked the link this morning.
Video comes up with "MR CARB TUNES GARAGE"
Sorry that it is not working for you.

Overall the info is pretty good. The CONSTANT "working the throttle lever' drives me crazy though in the video.

The assumption when you buy the "Pump Shooter Kit" is that you will be 'totally in the dark' on what your pump shooter size should be. If you bought the right carb for the application the Pump Shooter size should be close to stock.
Now if you are building a bunch of carbs for different people then you will probably use a few more Pump Shooter sizes. Holley wants to sell Carb Jet kits and Pump Shooter kits.

Another assumption is that the Accelerator Pump Linkage (clearance) was set wrong by the factory or the individual before you who owned the carb.

So here is My thoughts on the subject:

1) Remove the carb and make sure that the Throttle Blades are in the correct spot on the Primary side of the carb (Transfer Slot Position)
Make sure that the carb float settings are correct. Do those things first.
Set the engine idle at the proper rpm for your application using the secondary throttle blade position or by drilling holes in the carb blades.
(Drilled Holes in the blades may not be necessary unless the engine is a large engine.)

Make sure the engine is warmed up to operating temperature and the Choke Blade is open fully.
So once you have the carb idling correctly, don't touch the Throttle Speed Screw on the Primary side of the carb.
The assumption is that the Mixture Screws are adjusted properly and now you are ready for some other testing.

In the video, they show adjusting the Accelerator Pump clearances. You can easily do that step on the bench when you are checking out the other systems on the carb.

Remove any air gap between the Accelerator Pump Cam and the Accelerator Pump Lever when the blades are in the Idle Position on the Primary side. You turn the spring retainer and lengthen the distance until the clearance is barely removed. Then you open the throttles completely and you should still be able to push the pump diaphragm a bit more and see clearance on the Accelerator Pump lever.
What you are doing here is making sure that the Accelerator Pump Diaphragm always have some extra movement room. Otherwise you bend carb parts. Liquids for the most part are incompressible.

The "Pump Shooter Sizing" Check is best done on the road, not by blipping the throttle 100 times.
You are checking for instant response on "light Tip-Ins" of the throttle on the Primary side for mostly street applications.

Then you can do a few Short Wide Open Throttle tests and see if the engine accelerates smoothly in that mode without a hesitation. You are checking Acceleration Pump Function here.

In both cases, you should always have a bit of Accelerator Pump Diaphragm Clearance when the Carb is at WOT on the Throttle Blades.

I will discuss Pump Shooters Tomorrow.

Tom V.