[Pripyat]

You guys are awesome. It took me all of 30 minutes to run the buggy with the 125 main, do a plug test, swap to a 135 main, then do another plug test.

Both the 125 and 135 are lean. I'll post pics up later. White ceramic, light colored electrode. I was thinking vacuum leak so I idled the engine and sprayed propane all around the joints between the carb and the head. No indication of a leak at all. I put the propane at the air filter and the engine died instantly.

Could an issue with the autochoke cause this?

[Edit] I verified, 100% that there is no vacuum leak. I pulled out the carb cleaner and saturated the hose from the carb to the cylinder head. No change in idle. I also adjusted the float level to get more fuel in the bowl. Also verified voltage at the autochoke. I haven't been able to do another plug test. Anything else I need to check?