Thanks for all the input. I do have a crude way I can use a bicycle pump and apply some pressure to the tank and spray to look for bubbles. Probably do that one more time, to test my theory that whatever small loss is through the intake boot.
But for now, I’m gonna go ahead and ask some questions to help me think about cost and options for the top end.
Overall goal for this project is to make it a good cutting and reliable saw again, maybe a couple simple performance mods....and do so on the (relative) cheap. But without taking silly shortcuts.
I didn’t get the jug pulled last night for further analysis, hopefully tonight. In the meantime.....
1) I’m assuming the lowest cost scenario is rings only. How can I tell if the piston is good enough to re-use?
2) If the piston needs replaced but cylinder is OK, what should I go buy? Sounds like the meteor pistons are pretty highly regarded?
3) Buying a piston and rings for $30-$40 doesn’t put me too far from the cost of one of the cheaper aftermarket top ends, perhaps even one of the “028 Super” big bore ones? Anyone have experience with those parts and have some guidance on re-using the OEM (presumably small bore) cylinder with a new piston vs a whole new AM top end?