WE HAVE A WINNER (s)!!!!(well in a few minutes, anyway...) Ntolerance and Wheelsup73, both very good suggestions.I'm sure someone somewhere told me these things long ago, but just turning 50, it all ran out the other ear :-) Seriously the carb rag should work well, the dipstick deal is Einstein!(are we sure the normal crankcase pressure will not exceed the vacuum generated?)This motor is rebuilt and presumably tight, so should work as described... Out now to try! THANKS!!!
