Just thought I'd post up a little FYI. My Monty has been running great these past months and two weeks ago I finally put new rear shocks on. WOW what a difference in ride. Anyway, as luck would have it, the day after I go to start her up and she's mis-firing really bad. <img src="/forums/images/graemlins/barf.gif" alt="" /> As I rev it up it smooths out but at anything below 1500 rpm it's a three cylinder. It was way too cold to look into it so I let her sit until today. Long story short, I pull plug wires while it's idling and find #2 ain't firing. I pull the plug and check it and it looks fine (they were new 2 months ago) so I spray some brake cleaner (it was all I had) on it to clean it up some and that's when I see the crack in the electrode ceramic (as the cleaner evaporated the crack showed up clear as day). Popped a new plug in and she's running great again. <img src="/forums/images/graemlins/kewl.gif" alt="" /> It must have been arcing inside the plug and not lighting the fuel off at low speed and at higher RPM I guess there was enough swirl or something to ignite.

So if you need to check your plugs, spray some brake clean on the ceramic and watch as it evaporates.