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cray

Gas smell

4 posts in this topic

My 2007 Mercury 40 4stk has developed a strong gas smell when I start it up. It doesn't happen after the motor has been running for a while.

I checked under the hood several times and found no gas leak there. I have not had the valves adjusted yet. Could the motor be spitting unburnt gas out the exhaust because of the valve thing?

Any ideas?

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when the motor is running does the water by the motor have the rainbow looking color??

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check the oil to see if you have gas in the crankcase. Could be leaking into crank and then blowing out exhaust.

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