Once bought a RV6 which had the same problem. The answer was found to be the
float setting ; the engine had been in a nose wheel a/c and when fitted to a tailwheel
configuration the carb flooded on rough ground. In the air it was fine.
I assume you have a proper Maule and not the learner driver type !
I would suggest blocking the a/c and lifting the tail into flying attitude and performing an
engine run.
We slightly adjusted the tab on the float that operated the shut off valve ; this cured the
problem instantly.
Last edited by NearlyStol; 18th Sep 2016 at 20:24.