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Thread: Blown piston

  1. #1
    Aug 2018

    Default Blown piston

    I have a 1995 Monte Carlo Deluxe with a 339 engine , last season blew a hole through the top of the PTO side piston , replace the piston and had the carb rebuilt . This season after 2 tanks of gas blew another piston on the PTO side . I am suspecting bad crank seals . any help or suggestions would be appreciated

  2. #2
    Jun 2016
    Clearwater, Florida

    Default Re: Blown piston

    In 1995 there was a Montego Deluxe with a 640, and there is also a Monte Carlo with a 640.
    I think you are right that the crank seal are bad.

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