The Ford Barn - View Single Post - Bench testing the economizer diaphragm on a Holley 1901 (teapot) carb

rotorwrench · 01-15-2020, 10:20 AM

I use a piece of rubber hose and hold it tightly against the low pressure port then draw a vacuum by mouth on the other end of the hose. It shouldn't have a lot of pressure against it. A vacuum pump could be used instead if you have a good one.

01-15-2020, 10:20 AM	#2
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,432	Re: Bench testing the economizer diaphragm on a Holley 1901 (teapot) carb I use a piece of rubber hose and hold it tightly against the low pressure port then draw a vacuum by mouth on the other end of the hose. It shouldn't have a lot of pressure against it. A vacuum pump could be used instead if you have a good one.