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Kawasaki FH451V Engine on Gravely Zero Turn / Gas in Oil / Oil pushing back out Carb and (at least one, right side) Valve Cover

Left Side Valve Cover did not pour out oil like the right did, sitting a little off level though when removed. History: Cut grass a couple of weeks back, no problems noted. Went to crank today and was slow turning over (suspected only a weak battery to begin with) - put a jump starter thing on it and turned slowly, then cranked. Died after a few seconds. Tried again, same issue. Suspected a fuel issue (had problems when I bought it from Ethanol gum, but fixed and run Ethanol Free and Treated fuel ever since - caused Push Rods to drop out from stuck valves before). Anyway - noticed oil dripping from rear, then took off air filter and oil POURED out. Removed dipstick and looked down, Oil/Gas mix was pushed all the way up the tube - bubbly. Removed right side Valve Cover and oil / gas mix POURED out. Removed Left side Valve Cover - nothing really. Turned motor over very slowly, more oil and gas mix surges out right side but not the left. I am thinking broken / failed Rings on Right Side Piston or Busted Right Side Piston. Perhaps the engine keeled over after a short run because of Oil Pressure Drop / Switch working as designed? Thoughts?

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Your carb is flooding,fuel is going up your inlet manifold past the valves into the sump. It will come out of one side as the cylinder is higher on one side than the other. Drain and flush out the engine oil. Remove carb, strip and clean. Check fuel valve is clean and in good condition

Posted on Jan 23, 2019


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