Hi Group,
For the past two years I've had on and off bouts where my engine light would come on and it would run rough/miss and a few days later the light would go off and the miss would stop. This happens about twice a year. I put maybe 5-10k on it a year. Without me having to spend $100 right away for A dealer diagnostics, does one have any ideas what the problem may be?

Thanks much in advance,