I'm running a 5K engine with a 4K engine carburetor from a Starlet. This carburetor doesn't have the vacuum exit on the bottom for the vacuum advance so I'm running the advance from the intake manifold. I usually use a timing gun to set the timing and usually run it at 8 degrees.  A strange thing I noticed a long time ago was that if I unplug the vacuum hose from the dizzy the car shuts down. I'm taking mechanic and electronic classes and this week my teacher showed me how to set