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#4 spark plug fouled. Temperaturw differences between plugs
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06-08-2018, 01:57 AM
JOHN COOKSON
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A compression check would be a good idea since the engine was flooded (with water?). There may be stuck valve in #1 cylinder.
Maybe #4 plug is not good. Try swapping the plugs between cylinders and see if the trouble follows the plug.
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