Spark Plug Advice Needed
Finally, Hysteric, you did something right......
lean mixtures need more timing, which is why when cam overlap increases, the mixture is diluted [ leaned out ] at lower rpms by exh dilution...& requires more timing.
Many years ago, Champion had a spark plug series called the U series that had a large internal air gap to reduce fouling.
Finally, Hysteric, you did something right......
lean mixtures need more timing, which is why when cam overlap increases, the mixture is diluted [ leaned out ] at lower rpms by exh dilution...& requires more timing.
Many years ago, Champion had a spark plug series called the U series that had a large internal air gap to reduce fouling.