1979/1980/1981 Intruder has filled its crankcase with fuel three times this season. First when we pulled it out of the machine shed. Second time after getting it running and then letting it set for a week or two. And now a third time again after sitting for two weeks.
If we clear the crankcase she runs fine, really well in fact.
I am guessing that we only have two paths - either through the impulse line or through one or both carbs.
No evidence of fuel coming out of the carbs when the sled is running indicating that the flow needles are seating properly.
I now have the impulse line disconnected to see if anything comes that way.
Well, i guess there is a third path through the primer. I will have to check that too.
Interested in anyone else who may have had a similar experience and what it took to solve the problem.