Posted by Bret4207 on June 29, 2019 at 12:05:19 from (207.42.20.149):
My ancient Bobcat 444 was repowered with a 23hp Briggs Vanguard. It's worked good so far, maybe 30 hours actual run time since 2012. Suddenly it doesn't want to start. Tried new plugs, NGK's, and it started right up and ran. Used it for maybe 5 minutes and it stalled. Now I'm having same problem as before I changed plugs- it wants to flood and foul the plugs and I get a small backfire through carb from time to time. I'm thinking I somehow sheared the flywheel key, which means removing engine from the skid steer- not fun at all. The other possibility is that it's a wiring issue. Some ice broke a couple wires 2 winters back. I repaired them and it's run good since then, but I suppose it could be a bad connection (crimp style) but that doesn't seem to make sense since it ran good before. I've check the valves and they seem to be opening and closing alright, no crud in the heads, good compression, etc.
I'm out of ideas outside of the key being sheared or maybe a bad ignition altogether. ???
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