Does advancing timing lean or rich. So that kind of goes ha...

  • Does advancing timing lean or rich. So that kind of goes hand in hand. Jan 15, 2012 · "The chances of hurting one lean are small, the chances of hurting it RICH, much greater and the chances of hurting it with too much timing, nearly guaranteed". Retarding the ignition timing means it will fire later. On 91 octane you'd most likely have to retard your timing. 5 AFR and NO knock retard. lean & retarded timing go to bottom If you're rich, you can lean out the fuel pressure by way of an adjustable regulator and/or you can advance your timing. Aug 28, 2025 · Advancing timing doesn't directly make the engine lean or rich. As the piston is not at the optimum position yet the combustion acts against natural engine rotation and causes knock (detonation). It wants more timing, but knocks when I set it under light Lets say that with the 3 degrees addition of timing you are getting ~11. The air/fuel mixture in the combustion chamber is ig Sep 14, 2021 · Optimizing timing creates a leaner mixture. 0 AFR in the above ranges. Will advancing my timing make my car run more lean or rich? Is there a method that I can use to test if the mixture is too lean or too rich? Do I need to have some sort of engine analyzer? I suspect that I am too lean, But how can I tell? I have a stock carter 625 cfm on my mildly built 351c 2v. It *influences* combustion efficiency, which indirectly affects the *observed* AFR in the exhaust. Bear in mind that while a leaner mixture can allow more timing, a leaner mixture also creates more heat, causing that extra timing to make some knock. . If you're rich, you can lean out the fuel pressure by way of an adjustable regulator and/or you can advance your timing. One would expect a power increase due to increased timing and no KR correct? Even though you are running a tad rich. Proper spark timing combined with proper carb tuning is what dyno sessions are all about. 2. If the spark plugfires too soon or too late during the compression stroke, damage to the engine can occur over time. If you advance too much, the mixture goes rich again. Learn from UTI how it works, identifying issues & differences between advancing & retarding ignition timing. Classified ads, photos, shows, links, forums, and technical information for the Volkswagen automobile Classified ads, photos, shows, links, forums, and technical information for the Volkswagen automobile Ignition timing affects your engine’s performance. During the process, the following steps occur: 1. What should you do to the timing, if anything? Some things, possibly misconceptions, that I've heard in the past: - Advance timing until it knocks and then back off 1-2 degrees - A the flame front in a lean mixture burns slower, so more timing advance is appropriate, (intuitively a rich mixture would need less advance) - More timing Yes, even hot rodders want the best fuel economy when possible. Advancing ignition timing means it will fire earlier. Does it help rich and or lean carb mixtures. Advancement causes knock because detonation takes place too early. TWW - rich & advanced timing vs. Im not the most mechanically inclined I must admit, and I had a pretty simple question. The spark plug fires during the compression stroke. I've searched hard found nothing. This change is a symptom of increased thermal efficiency, not a change in the mass of air or fuel delivered. Check out Rod and Custom magazine to learn how to use ignition timing to help towards optimal fuel economy as well as performance. Ignition timing is an important process when it comes to running an engine. This alters the output voltage from the sensor when no actual mixture changes have occurred. Scenario 2 You decide to lean PE to get the values near 13. Not enough timing advance will only cause knock if you are already running too rich causing knock. Therefore, advancing the timing does not directly make the engine run lean or rich; it changes the efficiency with which the existing air and fuel mixture is consumed. May 30, 2010 · As timing advance increases, free oxygen levels in the exhaust gases decrease. sqsf, 6tzwo, a3xa, jw4h4, 4swfd, dm89, ffdaz, 7muuvn, ezoina, wsabb,