Quote:

I would recommend checking your distributor advance weights for sticking/ binding . I have seen them hang up a little,you set the idle,eventually they go back in place and the idle speed drops.
When yoyo blip the throttle it sticks again and the idle is back.
Keith



Either that, or he's right on the edge of hitting mechanical advance. The idle goes a little higher (or lower), the advance changes, which changes the idle speed, and it goes downhill from there.

If you ever find yourself in a fair fight, your tactics suck.