Cliff's Quadrajet Parts and Rebuild Kits

Quadrajet Problem Solving => Quadrajet Parts and Numbers => Topic started by: firebird_fast on July 15, 2013, 12:37:29 PM

Title: Choke Pull Off Vacuum Amount
Post by: firebird_fast on July 15, 2013, 12:37:29 PM

Hi, what is the correct amount of vauum I should see when I test the choke pull off?  Thanks.

Title: Re: Choke Pull Off Vacuum Amount
Post by: Shark Racer on July 15, 2013, 06:23:41 PM

Pump it up until the arm is completely retracted. At that point, it should hold vacuum.

Title: Re: Choke Pull Off Vacuum Amount
Post by: firebird_fast on July 16, 2013, 06:23:49 AM

I'll give it a shot, thanks.

Title: Re: Choke Pull Off Vacuum Amount
Post by: Ethan1 on July 16, 2013, 04:05:28 PM

Quote from: Shark Racer on July 15, 2013, 06:23:41 PM

Pump it up until the arm is completely retracted. At that point, it should hold vacuum.

 I agree with, Steve. At least, that is the way I check them.

Title: Re: Choke Pull Off Vacuum Amount
Post by: Cliff Ruggles on July 22, 2013, 05:09:47 AM

Just compress the unit and hold your finger over the supply.  If it doesn't hold it's not any good.  They used a lot of different pull-offs, which require different amounts of vacuum to fully apply them. 

Some later units have a "bleed-off" hole in them, so they will always fail a vacuum test. Make sure to hold a finger over that hole as well when testing them.....Cliff