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V6 - Where Is This Water Leaking From?

Discussion in 'Early CJ5 and CJ6 Tech' started by Buildflycrash, Sep 28, 2018.

  1. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    I filled the system with water yesterday to see if we could even start her. V6 hadn't run (or had coolent) in 10 or 12 years?

    Water sitting on top of manifold, passenger side only. The smaller hoses here look good and clamps are tight. Top hose is new and tight also. What is the most likely leak?

    [​IMG]
     
  2. Muzikp

    Muzikp Active Member

    Almost looks like it's coming out from under the valve cover? How fast does it fill up like that? Seems like you could dry it and run it to see where it comes from. Is there water in the oil?
     
  3. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    I don't think it could come up from under the valve cover and it fills up when the engine isn't running. I only ran it for a few seconds at a time last night as the fuel pump is bad. Got a new pump from FLAPS today. I'll look at oil right away.
     
  4. Rich M.

    Rich M. Shoe salesman 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Intake manifold gasket
     
  5. Tomellen

    Tomellen Member

    On my v6 with a 2G there is a water passage from the heads, thru the intake and up to the carb base. could be that if gasket is od and crusty.
     
  6. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    That shouldn't be to hard.
    How sure of that would you be?
    Is that common?
     
  7. Walt Couch

    Walt Couch sidehill Cordele, Ga. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    I thing the heater hose and it's connector/clamp are leaking. The fan is blowing coolant into the second cavity. JMO
     
  8. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    I ordered a heater bypass hose and intake gasket set from Rock Auto just now. Anyone else think of something I can spend $$ on?
     
  9. Bowbender

    Bowbender I'm workin' on it!

    I agree with Walt, pretty easy and inexpensive to eliminate that possibility if it's something else. Take a closer look at the thermostat housing gasket too.
     
  10. Muzikp

    Muzikp Active Member

    HaHa! Swinging pedal and brake booster :whistle:
     
    Rich M. likes this.
  11. heavychevy

    heavychevy Sponsor

    X2 on heater hose or clamp leaking. The fan can move water around under the hood.
     
  12. Tomellen

    Tomellen Member

    It is one of the possibilities. Once you get a list of possibilities start looking at each on on a low cost priority. Is there any water running down, or seeping down the intake manifold where the carb sits. If not probably not that gasket.

    Can u blow or wet vac the water away then try to determine where it is coming in. That's what I would do.
     
    Bowbender likes this.
  13. Rich M.

    Rich M. Shoe salesman 2024 Sponsor 2023 Sponsor 2022 Sponsor

    You should be able to pressure test the system and look for leaks. You can rent a tester from AutoZone and most flaps.
     
    Buildflycrash likes this.
  14. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    Cool. I’ll do that over the weekend. Thanks.
     
  15. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    This thread from back in September, I found the leak.

    [​IMG]
     
    Muzikp likes this.
  16. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Well, there's your problem!
     
  17. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    Tim. What exactly do you call that rusted out part? Where to buy?
    Is that hose a prebent thing or straight heater type hose?
     
  18. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

  19. ITLKSEZ

    ITLKSEZ Hope for the best, prepare for the worst

    Wow! I hate to say this, but good luck getting that piece out. o_O

    I've always used regular old heater hose. 5/8" if memory serves.
     
    47v6 likes this.
  20. FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    x2 on both accounts