Why does my Kohler 15CCFOZ engine emit black or gray exhaust smoke?
- JJennifer BowmanSep 5, 2025
If your Kohler Inverter engine emits black or gray exhaust smoke, it could be due to using the incorrect type of fuel (use correct fuel), a clogged or dirty air intake silencer (service air intake silencer), a lube oil level that is too high (drain out surplus lube oil), or using incorrect lube oil (use correct viscosity oil).