Question 2, High Idle - yet again Options

[BenNC]

I know, there have been a gazillion posts about high idle. Most of them seem to end with check al the hoses and set the timing.

I have replaced all the hoses, and set the timing. With the idle adjust screw all the way clockwise I idle at about 1800 rpm. Per my Haynes manual, turning the screw counterclockwise whould lower the speed, butthe idle increases for me. Is this an error in the book, and what should I look at next.

By the way. It idled fine until the points of undetermined age froze on me. It idled fast with new points and has continued with the new Pertronix.

Thanks

[mightyohm]

Clockwise should reduce the idle speed. You're screwing in the bypass screw and making the bypass passage smaller.

For the first few minutes the engine is running the AAR will be letting extra air in and raising the idle. You can block the input to the AAR to check this.

Check to make sure the throttle plate is closing all the way also. If not that will let air in too.

You should be able to stall the engine by screwing the idle screw in all the way and plugging the AAR.