I fly a Cessna 175 with a Lycoming 0-360-A1A conversion. Last fall I elected to replace my Bendix mags, which needed a rebuild, with a Slick replacement kit. The mags and wiring harness were replaced but I did not install the new Au-tolite plugs as my existing set of Champions had only about 100 hrs on them. Since this installation the engine is very prone to what appears to be plug fouling. I get a rough run-up on one mag about 75 percent of the time.
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