What would cause an RPM drop at high RPM on a 2 stroke carbed 2003 200XL SWB? Once i hit 5k with a 21p prop or 6200ish with a 19p i get sudden RPM drop.
Fuel issue has been ruled out completely. I have replaced all fuel lines, anti-siphon valves and filters. The tank vent is not clogged, carbs...
I have a 2003 proline 22 sport with a 2003 Mercury 200 XL SWB (carbed) and I have been to the moon and back with this issue. When I got the boat the guy had a tiny 4 blade 17P prop on it. It would turn in excess of 7000rpms so I changed it right away. I picked up a stock SS merc prop in a 19p...
