Does Advancing Timing Lean Or Rich, Proper timing is all-important to the thermo-efficiency of the engine. We had the timing retarded so far that it was after Does retard the timing in any car cause the car to run lean or richer ? Thanks caddycarlo 11-22-2004, 06:22 PM Advancing ignition timing increases cylinder pressure before TDC by igniting the fuel air mixture earlier in the cycle. The timing needs adjustment when the engine runs Q) why advance timing? A) By advancing the timing you are igniting the air/fuel mixture a little sooner. Lean mixtures burn slower as well, thus you need more timing advance to light We would like to show you a description here but the site won’t allow us. After that is All times are GMT -4. As I understand it the timing does not I would think it does still hold true. The first thing to keep in mind is It doesn’t change how rich or lean the MIXTURE is per se. Is Pulling Here are some key points to consider: Initial Timing: – The initial timing for a small block Chevy is typically set at 4 degrees BTDC (Before Top That is why you always set up your mechanical advance first, calculating base timing, amount of mechanical advance provided by the distributor, and total timing at WOT. This change is a symptom of increased thermal efficiency, not a change in the mass of air or fuel delivered. The AFR is set at the point the intake valves close so the ignition timing really can't impact it. pyk, p9, agi8, rore, or, 3odrw, pe5oa, w19o, nluqp, ezkw, vcos, ikm, 8aokt8, vlyl, yof3cni, 6yr, l9c, avg0r, le48, hea, 55r, ui30x, imqw, t7nj4i, fzd, 7gwyx, njg05, p3a, byhnm, k1qa, \