How do you set the idle timing on a car?
How do you set the idle timing on a car? Detach the throttle cable from the power head and attach a timing light to the top spark club lead. Adjust the ignition timing. Shift into neutral and start the engine while holding the throttle arm. Adjust the idle timing screw so that it is 2 degrees before top dead center. When to change ignition timing for maximum power? Optimum timing from a fixed (locked) ignition advance occurs at only one engine speed. Ignition timing is too advanced at engine speeds below that and not advanced enough at engine speeds above...