Will Advance Timing Cause Rich?

If you advance your timming you will have to richin the fuel mixture, if you retard the timming then you would have to lean out your carb for it to run best.

Will timing cause engine to run rich?

Will timing cause engine to run rich? A well timed ignition will allow the engine to run powerfully and efficiently. The timing needs adjustment when the engine runs too lean or too rich.

What will advancing the timing do?

The major benefit to advancing the timing of a vehicle's ignition is increasing the horsepower of an engine. Advancing the ignition timing helps raise the high-end power while reducing the low end. It also helps get the spark past the ignition delay and run at peak power.