What engine? Mine smoke like crazy after they sit for 3-4 weeks, and there all pre-mix. The problem is that most of the fuel in the float bowls evaporates from sitting, but oil doesn't evaporate. Hence when you fire it up again it smokes, the jets are basically sucking straight oil in them. This is why there is the 2 week rule, start the engine at least every 2 weeks and you won't have this problem. Also a good fuel stabilizer like PRI-G will help with the fuel evaporation problem I have found.
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2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR
2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD 
AND THE PINK JEEP!!!! R.I.P.
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