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Diesel Damage to gas engine - valves??
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Posted by PaulG1 on April 06, 2005 at 22:24:13 from (64.57.108.124):
I suspect my valves are sticking on a Honda 13hp mower as a result of 25% diesel in the gas (ouch my mistake) and i ran about 1 gallon total polluted mix through the engine. It ran fine while burning the polluted mix but about 2 tanks later it all sudden developed a very pronounced miss. The simptoms are a miss at all rpm ranges and a black hue in the exhaust at the miss - almost like it is running with full choke on.
If sticky valves resulted is there a way to untick the valve - maybe pour Marvel mystery oil in the spark plug hole so that the cylinder head is full of Marvel and then let is sit for a week? Also to add to my theory - do you think sticky valves would rendor symptons such as extremely rich condition? The miss is almost non-existent for the first minute then gets very pronounced as the engine warms up. I've been throught the carb 4 times and can find no defects or anything wrong at all - fuel delivery perfect - float valve shuts off nicely. Thanks for the help - this ones got me stumped - but could it still be the carb? Paul
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