cray Posted June 28, 2009 Share Posted June 28, 2009 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? Quote Link to comment Share on other sites More sharing options...
ranger20 Posted June 28, 2009 Share Posted June 28, 2009 when the motor is running does the water by the motor have the rainbow looking color?? Quote Link to comment Share on other sites More sharing options...
cray Posted June 29, 2009 Author Share Posted June 29, 2009 Yes. There was a small slick the last time I ran it. Quote Link to comment Share on other sites More sharing options...
jeffreyd Posted June 29, 2009 Share Posted June 29, 2009 check the oil to see if you have gas in the crankcase. Could be leaking into crank and then blowing out exhaust. Quote Link to comment Share on other sites More sharing options...
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