Home › Forum › Ask A Member › excessive gas coming out of exhaust port › Re: excessive gas coming out of exhaust port
Unfortunately, what you are seeing is considered fairly normal for these engines. There is a crankcase drain that discharges puddled fuel/oil out the exhaust, and the engine does not have a thermostat so it tends to run cold at lower speeds. You should be using the champion J6C plugs gapped at .030". Please do not cut back on the oil mix in an effort to reduce this emission, in fact I would use 16:1 on this engine due to its lack of wrist pin needle bearings.
All that being said, it surely is possible that there is a slight fuel leak at the connector or somewhere under the hood causing the sheen you are seeing. You might try running the engine with the cover removed after cleaning the engine pan with degreaser, to check for leaks.