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  1. C

    Fluctuating oil pressure guage

    Help! Changed the oil pressure sending unit with an OEM one. Changed oil ( 25/40) and filter again. Oil level correct on the dip stick and the stick is correct in the tube. Engine has 600 hrs and ran perfectly before elbow failure. No lifter or bearing noise before or after. My next options...
  2. C

    Fluctuating oil pressure guage

    Elbow failure on the port engine caused water to enter the oil. After replacing the elbows and multiple flushing and oil changes, the engine runs perfectly except now the oil pressure fluctuates between 27 psi and 50 psi at 2700 rpm. A quick throttle up from 1000 psi to 2000 psi, the oil...
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