What plugs you using? Float level set correct?
Hi dirtdigger, ya know a few years ago I posted the same problem and you were responding then. I posted a couple of times today with a whole list of things I had done between the last time you were answering my questions. Anyway if you search my username of untill62, there are todays other questions, but to summarize, this has been the same problem for a long time.
I had a detached retina, so for over a year I have not touched the bike. but this year I wanted try again.
I put in new electronic ign, new coils, new boots, new plugs ngk D8EA, new batt., cleaned tank, new non ethynol premium w/octain boost from amsoil, cleaned carbs again, checked float levels as per manual.And had same problem as before the new ign stuff.
Works great with fresh plugs. Great throttle response, idles fine. so before compression check(all were 146-150) I had fresh plugs and within 5 min., pulled plugs to do compression and they were starting to carbon. I am going to be replacing the boots between carbs and engine. They are original and I tried to soften while carbs were off, but they didn't soften as much as i'd like.
Wanna buy a 2nd owner bike. I have had it since 75. But would sure like to ride it!!