[steve86]

I'm still running the original crank seals on 70s and 80s and 90s two-stroke trail bikes. Been lucky that way. Original carbs and jets, too, mostly.

On the two stroke upper cylinder compression tests (these are singles), we always remove the plug, put the plug cap back on the plug, ground the plug, and kick over with the throttle held wide open. People have different practices regarding warm vs. cold motors -- just be consistent.

You can find Youtube videos showing leakdown tests -- they aren't that difficult. I've actually never bothered to do one.

[Lx]

I'm still running the original crank seals on 70s and 80s and 90s two-stroke trail bikes. Been lucky that way.

Let em sit dry for a year and get back to me heh heh. The absolute worse ones were the Kawa triples, I think if you didn't start em once a week they'd stop running out of spite; but man they could haul the mail in a straight line and that was stock, add chambers and the correct jetting and they would scream except you could walk faster if it was below 6k rpms.