What makes the ignition coil spark at 400 rpm?Īs you might already know, it’s this ‘Switching Signal’ that makes the ignition coil start sparking away. This electric spark has to happen at exactly the right time or the engine will not run properly. Ignition timing and spark advance IGNITION TIMING Most engines (except diesels) use an electric spark to ignite a fuel/air mixture. How does ignition timing and spark advance ignition timing work?
The difference is that loose valves will make noise all the time, whereas pre-ignition happens on acceleration or under a load. Pinging or spark knock is properly called “pre-ignition” and is often incorrectly called “valve noise” because it sounds similar to loose valves that need adjusting. What’s the difference between pre ignition and spark advance?
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