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Thread: Coolant Leak on the 2.6L

  1. #1

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    02-02-2017
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    Louisville KY
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    1987 Mitsubishi Mighty Max
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    G54B

    Coolant Leak on the 2.6L

    I just yesterday had a coolant leak start. It is landing on the exhaust and turning to steam. I cannot seem to find it, because it evaporates as soon as It leaks. Does anyone have a Hose Diagram of the coolant system on the 2.6L? Or know of some common places that these engines are known to spring coolant leaks? It s leaking enough to cause it to steam out of the hood if it sits and idles for around 5 minutes.

    Thanks,

  2. #2



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    Might be a head/gasket leak. The 2.6l are known for blowing head gaskets and/or cracking the heads. There is nothing that I recall is above the manifold that could leak coolant besides the head gasket.

  3. #3

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    Is the leak on the manifold or the lower collector pipes? There is an external coolant pipe that runs the length of the block from behind the water pump - they can rust out but it's more common for it to rust at the heater hose connection end. It would have to be a pretty big crack or a gasket blow out to eject enough coolant to hit the exhaust. The steam might only be normal condensing vapor from the leak origin and not from the exhaust.

  4. #4

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    Ended up finding it guys , it was a hose on the intake side. Was cracked on the bottom where it connects on the intake side. Was spewing out when I was driving and the fan was blowing into the other side of the engine bay onto the exhaust manifold. Easy fix,
    Thanks again

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