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  1. J

    Cat 257B blow by! Please help

    It seems to be a common spot for those older type gaskets to blow, at no 1 piston on exhaust push rod side. It seems odd that push rod is bent,if the exhaust valve isn't carbon' d up and sticking, i think Delmer 's guess of getting hot at the breach point is possible . Also i agree $100 is a bit...
  2. J

    Cat 257B blow by! Please help

    Been there,its probably the head gasket,you will find it blown from the fire ring into the push rod port causing crankcase pressure.I had the same symptoms with a 05 216b.To check turn the motor over by hand with the oil filler cap off and listen for air escaping as each piston reaches TDC .It...
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