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912s magneto question

Posted: Fri Jan 23, 2009 9:10 am
by Frequent Flyer
Hi guys, yesterday afternoon after warming up the engine (912s) i did a mag check on 4000rpm, i checked the 1st mag, drop was ok and engine running smooth, checked the 2nd and drop was ok but engine running a bit rougher than the other mag. Is this normal?

Re: 912s magneto question

Posted: Fri Jan 23, 2009 10:10 am
by weedy
The bottom row of plugs usally foul up quicker than the top ones, try cleaning or replacing.