The engine will fire up with no problem- the prolem is when she has been running around 4000 rpms for a cuple of hours then drop it down it idle. It idles fine but once in awhile when i give it gas it stalls out, she allways starts up again. Any suggestions, the engine is maintained by a boat yard so everything (i think has been done by the book) thanks in advace for the help. It's only really a problem when i an trying to dock in a stiff wind. How about that de-carb stuff does it work, should i be using it on a regular basis.