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Engine will run for 1 minute then shut off with a cloud of white smoke out the exhaust. i remove and cleaned carb. float is free not binding no improvement

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This symptom can indicate several problems, white smoke is usually indicating water in the system, as this is air cooled honda motor, therefore it is not coolant, check oil and check if there is water present in oil sump or in fuel tank.

Water from fuel tank can be easy drained, with fuel, replace then as well fuel filter and clean again carby. add about an ounce of methylated spirit adn fill gas to full, start engine and check if problem still present.

If this did not solved the problem, check oil for presence of water.
Water can seep to oil sump through trans, and as water pump is located directly on the shaft, simmer bearings may load water under pressure to the crancase. If necessary, repalce bearings and seals.

Please let me know if this was correct advice, or you did find other reason for that white smoke.

Oil is usually burning bluish, fuel not fully burned is black.

Hope that this will be just condensation in the tank.

Posted on Aug 06, 2010

  • bzet1820 Aug 16, 2010

    sometime it is dishearting... there is over 60 views of this advice, and not even one rating or comment... I know all backyard mechanics are more familiar with tools than with computers but do give us some credits and at least say: It works! or: You were wrong!

    It is encouraging us to gie helping hand to others if we see that this what we do is at least appreciated!


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