2011 Frontier 580 Vanguard 18HP Spark plug goes black
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2011 Frontier 580 Vanguard 18HP Spark plug goes black
All of a sudden my nice running 580 with less than 75 hours won't start and when I replaced the plugs, the new ones went black in a couple hours of use and won't start again.
Does it run fine while it is running and then just won't start back up when you shut it off or does it sputter and lack power when it is running? Also, when it won't start, have you pulled the spark plugs out and watched for spark on them while you turn the motor over?
Couple quick things to check
Is the air filter clean? Will it start with the foam band off, from having to much oil on it?
Is there gas in the oil from the float sticking?
Is there spark to both cylinders?
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