I have a 1984 J115TLCRD 115HP...its starts ok, runs great above 1/2 throttle but smokes like mad at idle/just over idle and runs generally like crap near idle speed. Here's what I know; Compression 115ish on all 4 cyl, carbs cleaned out, needle/seat decent-float level good, thermostats seem ok but it actually seems to run cool. (should the heads be warm or HOT to the touch? I suspected the VRO pump so I disabled it and ran on straight 50:1 but it still does the same thing. There is an excessive amount of grey/milky oil mixture covering the prop and exhaust discharge even with no VRO hooked up. I assume this is unburned oil/gas mixture as the plugs seem quite wet when I inspect them.. (pressure tested lower unit - holds 15lbs all day and that oil is clean)..what could be causing it to run so rich? Operating temp not up enough? Fuel delivery problems? I am at a loss...any help greatly appreciated!!
Thanks
Thanks