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  1. #1

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    Water in oil after running 4-5 minutes on the hose. Water pump seal or oil cooler or?

    Its a 2002 GTX 155hp. Bought it with engine apart due to timing chain. Got it all back together and running on hose. Coolant reservoir is loosing coolant and oil level has gone up and started to get milky. Anybody have ideas.. I am assuming it is either the oil cooler or water pump seal? It lost half the reservoir in that 4-5 mins (some could have been an air pocket as it warmed up).

    If oil cooler is bad wouldn't it pump oil into cooling system?

    I never changed the water pump seal when I had it apart.. it only has 60 hours on it and I did not have the tool.

    Any help from anyone would be great...........


  2. #2

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    I did have engine completely apart and used all new gaskets other than that and followed the manual. Frustrated...

  3. #3
    Steve-m31164's Avatar
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    I would say oil cooler has a leak.

  4. #4

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    Quote Originally Posted by Steve-m31164 View Post
    I would say oil cooler has a leak.
    From what I have been reading when the oil cooler leaks you get oil in the antifreeze due to the higher pressure of the oil. I am getting anti-freeze in the oil..

  5. #5
    IDoSeaDoo's Avatar
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    Quote Originally Posted by coastalfun View Post
    Quote Originally Posted by Steve-m31164 View Post
    I would say oil cooler has a leak.
    From what I have been reading when the oil cooler leaks you get oil in the antifreeze due to the higher pressure of the oil. I am getting anti-freeze in the oil..
    What was it? Please follow up, I have the same problem to the t

  6. #6
    Kiwi spanner handler
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    if the water pump seal leaks water spills out the small weep hole in pto cover above the left engine mount.
    You either have a major head gasket issue (installed wrong etc) or the pto gasket at rear of engine.

  7. #7
    Guidoo's Avatar
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    Not to mention a burnt carbon seal from running it 4-5 minutes out of the water

  8. #8
    IDoSeaDoo's Avatar
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    I was attentive to spray down the carbon ring with soapy water every 30 sec or so, and it's actually a leaky oil cooler

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  10. #9
    IDoSeaDoo's Avatar
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    Quote Originally Posted by jasonze View Post
    if the water pump seal leaks water spills out the small weep hole in pto cover above the left engine mount.
    You either have a major head gasket issue (installed wrong etc) or the pto gasket at rear of engine.
    If the waterpump seal went out, you're saying the water would not go in the oil?

  11. #10
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    Their are actually two seals on the shaft that drive the water pump, and it's rare that either fail. One is a coolant seal, the other is an oil seal. If either one leak.... either coolant, or oil will come out of the earlier mentioned weep hole. Even if both seals were blown (highly doubtful)..... coolant would probably not get into the engine oil, as the oil seal is directly behind the rear high pressure oil pump.

    On another note.... a blown oil cooler will fill your engine with anti-freeze (or water). I've seen it happen a few times. Also uncommon unless open loop, and not maintained properly.

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