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Doc I will get you a carb number in the morning, but as far as I know it is origional to the motorhome, and also it has a set of headers and dual's so no heat riser.



d-man ... it sounds like there is an issue on the primary side of the carb ...with surging. PROBABLY the wrong size rods in it.

I would suggest getting a spark plug reading at diff stages of running ...or BETTER YET .. put a wide-band 02 on it.