barton174
ArboristSite Guru
So, I've got this 2166. 2015 saw. I took .020 off the base, still using a gasket (and yamabond), de-restrictor'd the transfer covers, beveled the lower transfer openings, .030 off the piston skirt intake side, new rings, and removed the strato splitters in the filter mount, carb, and intake "manifold"... The "spike special" treatment, basically. (also ground out the plastic center piece between the adjuster screws, so the carb adjusts with just a regular screwdriver)
I'm tuning it, and I got the top end at 12,800 for breaking in the new rings, it revs fine and all that. It also idles fine for like 10 seconds or so, then the rpm floats around a bit for a second or 2 (as it gets lean), then it dies. It'll stay running if you rev, idle less than 7-8 seconds, rev, idle less than 7-8 seconds, and so on.
I've had the carb off twice, and blown air through the jets/ports, as well as this last time, carb cleaner through everything, and it flows through the whole idle cicuit just fine.
I haven't vac or pressure tested it yet, but if it was a vacuum leak, it either would idle or wouldn't idle or whatever, right? It wouldn't idle fine and then lean out ~10 seconds later and then die, right??
Thanks,
Mike
I'm tuning it, and I got the top end at 12,800 for breaking in the new rings, it revs fine and all that. It also idles fine for like 10 seconds or so, then the rpm floats around a bit for a second or 2 (as it gets lean), then it dies. It'll stay running if you rev, idle less than 7-8 seconds, rev, idle less than 7-8 seconds, and so on.
I've had the carb off twice, and blown air through the jets/ports, as well as this last time, carb cleaner through everything, and it flows through the whole idle cicuit just fine.
I haven't vac or pressure tested it yet, but if it was a vacuum leak, it either would idle or wouldn't idle or whatever, right? It wouldn't idle fine and then lean out ~10 seconds later and then die, right??
Thanks,
Mike