Re: Carburetor Adjustment

Posted by Owen_Dyneto On 2011/5/17 12:08:34

After you resolve your ignition issues and retime the engine and set the idle speed, I strongly recommend you use a vacuum gauge to set the idle mixtures. If you don't have one, they're cheap and you'll find it a very useful tool and it will get plenty of use.

Essentially, you want to have the idle mixtures screws set to give maximum vacuum without opening (enriching) beyond that point. To put it another way, as lean (in) as you can go and still keep max vacuum. An idling engine in good internal condition should give a vacuum of 18-21 inches, more or less.