Re: 6r72 bad idle

[Don]

OK, well you will want to verify spark first…Couldn’t really understand your explanation, except that you felt the engine was low on power in gear while running in the tank…It is surely possible that the engine is running on just one cylinder…
I’m trying to remember, is this engine new to you? Have you ever had it running before? If so, did it run OK then?
You say the engine does not respond at all to low speed needle adjustments, do I have it right? If so, perhaps someone has snapped the tip of the needle valve off, it is stuck in the mixing pocket, making the carb impossible to adjust…