Originally Posted by
JourneyMan
More strange behavior coming from this motor. Still working on the break-in process and last night it decided it wanted to fire backwards. It is very consistent, fires backwards about every other start. That backfire that I mentioned in an earlier post, I believe was the start of this. It backfires and then runs in reverse. Ron- I know this is common of 2-strokes in MX and that orientation doesn't matter, but is this a bad sign during run-in?
I've never had an engine run backwards on me but I would not think that it would damage anything. It is however certainly not normal behavior and is only something that I have ever heard of happening to people when their engines are set really rich during break in. Which brings me to did you follow my advice above and change your needle settings from where you had them which was simply way too lean on the LS and too rich on the HS?