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2013 suzuki 250 ss overheating?

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  • 2013 suzuki 250 ss overheating?

    Looking to find out what would be the max. temp range. at WOT. for this engine.

  • #2
    Check your service manual for thermostat rating. Mine is 58-62C for a 2009 DF90A.

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    • #3
      i replaced both thermostats to 130 degrees. At WOT my temp. climbs to 160. Is this normal? Full service was just completed.

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      • #4
        I see nothing that suggests that 160F is high. If anything, a touch low. But that may be due to water temps in your loaction.

        My DF115 runs at around 74C under normal conditions, which is 165F if I am not mistaken. Water temps here on the east coast of Australia are anywhere from 15-30 degrees C.

        If your engine were overheating you would get an alarm before damage is done. The Suzukis have 2 temp alarms - one is when a preset level which is too high is reached, the other is a gradient alarm, which is when temp suddenly increases although the high temp point may not have been reached.

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        • #5
          My '14 300 runs in the 138 F range WOT in SoFlo in the summer. At 160 I have got an alarm before due to sand in the intake.

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          • #6
            Had full serviced and the problem still remains. Could it be a sensor? Looking for a GOOD Suzuki tech in SW florida. Someday i will sell the boat but went to fix this problem now..

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            • #7
              Suzuki 250 SS....My temp now climbs to 180+ above 5200RPM. Full service just completed. Replaced complete water pump(twice), both stats, all 7 poppets.

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              • #8
                Sometimes if you have the wrong engine interface cable software, you can get false readings from some sensors.

                Can you confirm that you are running digital gauges (eg C-10 or Suzuki SMIS ?

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                • #9
                  Great suggestion. My concern is that all temp reading were below 160 when the boat was new and several years after. I'm using SIMS single gauge.

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