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Cooling system rust

Discussion in 'Kawasaki 250cc In-line 4's' started by benpayne92, Jun 15, 2014.

  1. benpayne92

    benpayne92 Active Member Premium Member Contributing Member

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    Best way to flush rust from the radiator?
    Previous owner has just used tap water as coolant
     
    benpayne92, Jun 15, 2014
    #1
  2. Jim

    Jim Active Member

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    Disconnect the hoses off both ends of the radiator and reverse flush with garden hose. That'll get most of the gunk out. Then you can use the solutions from an auto store. Check the thermostat. Could be cactus too.
     
    Jim, Jun 15, 2014
    #2
  3. Th3_Huntsman

    Th3_Huntsman Senior Member Contributing Member

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    Run the hose thru the engine as well.
     
    Th3_Huntsman, Jun 15, 2014
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  4. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

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    Do it only with engine cold. !!!!
    With the cold water from hose in hot engine will cause cracking of the alloy.
     
    Murdo, Jun 16, 2014
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  5. zixxer

    zixxer Well-Known Member

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    you must take the thermostat out to flush it properly with a hose.
     
    zixxer, Jun 16, 2014
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