Re: 1988 Force 125 o/b prop help
It is Running rich, and should be jetted accordingly.<br />Very few understand jetting above 3000ft, and I've delt with it for 25 years.<br />You need to drop down .003 in jet size on the mains.<br />As for prop size, 15" is standard on most 18ft boats with semi-V, Tri-hull, or Deep-V for all load configurations when running only one prop for all uses....In the Denver area, 13" cupped is not uncommon.<br />Density Altitude is a very big concern in the summer there, and the "100HP" stated earlier is pretty close, and in the dead heat of summer 90HP would be pushing it.<br />If you're getting 5500 with a load with a 17" at WOT, you're doing good, but the over-rich condition needs to be corrected as it will increase hole-shot tremendously without changing props, and considerably less carbon build-up as a result. You will NEVER create the heat you would at sea-level because you will never develope designed power for the engine at 5000ft elevation.
