Onan generator developing slight surge
My 3 year old Onan 4K has 150 hours on it and I have properly exercised it every month when not in use. Last week, I noticed a slight surging under load and with out. My Killawatt showed a drop of .2...
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I would absolutely try sea foam.For the price it's well worth trying before ending up smelling like gasoline.
There is no guarantee that it will fix your problem but if it does than you would pretty much assume that it was a blockage which caused a slight lean condition.
Gasoline doesn't sit around well in small engines. 2 strokes seem to do better than 4 strokes since they usually have diaphragm carbs which aren't open to atmosphere. Four strokes carb bowl is vented to atmosphere.
If it fixes it you might then run seafoam on some schedule. I don't believe in piston ring replacer in a can but I have seen seafoam work many times.
There is no guarantee that it will fix your problem but if it does than you would pretty much assume that it was a blockage which caused a slight lean condition.
Gasoline doesn't sit around well in small engines. 2 strokes seem to do better than 4 strokes since they usually have diaphragm carbs which aren't open to atmosphere. Four strokes carb bowl is vented to atmosphere.
If it fixes it you might then run seafoam on some schedule. I don't believe in piston ring replacer in a can but I have seen seafoam work many times.
