Home › Forum › Ask A Member › Fuel:Oil Ratios › Re: Fuel:Oil Ratios
March 4, 2018 at 3:31 pm
#71956
quote Shane.R13:
1974 Evinrude 15HP smokes when going from trolling to high speed.
This is one sign of a motor getting low on compression or running too cold. The thermostat in these motors must be installed and working properly to keep them up to temperature. If the thermostat is good, a compression test and slightly hotter spark plugs may be required. This is after assuming the idle mixture isn’t set too rich.