1. Welcome to PlowSite. Notice a fresh look and new features? It’s now easier to share photos and videos, find popular topics fast, and enjoy expanded user profiles. If you have any questions, click HELP at the top or bottom of any page, or send an email to help@plowsite.com. We welcome your feedback.

    Dismiss Notice

s10 coolant leak stumped

Discussion in 'Chevy Trucks' started by randomb0b123, Jun 6, 2012.

  1. randomb0b123

    randomb0b123 PlowSite.com Addict
    from america
    Messages: 1,278

    93 s10 2.8v6 first water pump gave up and started leaking changed that no leak, about a week later a hose, change that no leak, week later radiator split tank so i replaced it and other hose, and cap. no leak, week later thermostat housing starts leaking, replace thermostat and gasket, no leak, week later another leak but i cant figure out where this ones coming from, it drips off where the timing cover and oil pan meet and runs down to there from somewhere on the passenger side of the engine. why does it keep leaking after i fix one thing then soon after that something else lets go??????. oil clean and at correct level coolant also clean.:dizzy::realmad::mad:
     
  2. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,970

    Maybe heater hose. It keeps leaking b/c it finds the weak spots.
     
  3. randomb0b123

    randomb0b123 PlowSite.com Addict
    from america
    Messages: 1,278

    the heater hose connects on the passenger side and that sides dry its the drivers side that the coolant is dripping down from. its getting really aggravating. im almost to the point of trying one of those mechanic in a bottle things
     
  4. blazer2plower

    blazer2plower Senior Member
    Messages: 544

    Go to Autozone get a pressure gage hook it up to 13 psi or what ever your 2.8 is. I had that same S10 it was.one thing after another.
     
  5. randomb0b123

    randomb0b123 PlowSite.com Addict
    from america
    Messages: 1,278

    forgot to mention, it wont leak while its running it starts leaking hours after its been shut off and started to cool down.....
     
  6. Plowtoy

    Plowtoy Senior Member
    Messages: 929

    Being that its a 2.8 I wont just jump and say its lower intake gaskets (although it could be). The vortec 4.3s had more of a problem with that then the 2.8s. The reason it starts leaking somewhere new every time you replace something is simple. The cooling system builds pressure (about 16psi), over time gaskets, seals, ect, ect, ect, weaken and once you fix one leak, the pressure builds until something else fails. Unfortunately, the problems may have just started. If it helps, I have had good luck with a cooling system product in a bottle (i dont remember what its called) but its made by Hapco in Michigan.
     
  7. randomb0b123

    randomb0b123 PlowSite.com Addict
    from america
    Messages: 1,278

    im aware of gms having intake manifold leaks but i really dont think thats the case with mine, the leak seems to be farther down, right below the intake manifold and around it is all dry, i cant figure out where exactly it comes from. im going to pressure test it again and see if i find anything. is this the stuff you were talking about? http://www.ebay.com/itm/HAPCO-BLOCK...IATOR-HEAD-GASKET-CRACKED-BLOCK-/180807735538
     
  8. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,970

    Stop leak is junk......get the psi tester as stated. Find and fix the leak,,, don't think that the fix all in a bottle will solve everything
     
  9. blazer2plower

    blazer2plower Senior Member
    Messages: 544

    A friend used stop.leak for a small hole in his radiator and. His heater core went out. When I took it out it was full of stop leak. He only put 1 can of that stuff. One new heater core and radiator cost to him 450.00 and in the winter you just need your heater
     
  10. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,970

    Yep my point exactly....that stuff clogs all the little passages in your cooling system not worth the money
     
  11. Plowtoy

    Plowtoy Senior Member
    Messages: 929

    Yep, that is the stuff. Unlike the stop leaks of the past, this stuff pours in almost like water and I believe it has a money back guarantee. It doesn't have any chunks in it that will plug the radiator and heater core. I have had good success with it and will continue to use it in a pinch. Now as far as pressure testing the system, that is the correct way to diagnose the problem. If you are going to try a bottle of cooling system "stop leak" I would only try this brand. Good luck to you
     
  12. trqjnky

    trqjnky Senior Member
    Messages: 620

    gm has a stop leak tablet they sell at dealerships because they had soo many leak problems. it works and isnt like the junk you buy at parts stores.
     
  13. Plowtoy

    Plowtoy Senior Member
    Messages: 929

    yep, forgot about those. GM required techs to put them in the quad 4s after you changed the head gasket. Kinda funny
     
  14. randomb0b123

    randomb0b123 PlowSite.com Addict
    from america
    Messages: 1,278

    truck wont leak coolant under pressure so cooling system pressure tester wont do me any good. it only leaks after its completely cooled down and sat for a while. i dont get it
     
  15. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,970

    So don't run it,,,,,but do the psi tester anyway
     
  16. randomb0b123

    randomb0b123 PlowSite.com Addict
    from america
    Messages: 1,278

    so just try pressuring it when its totally cool?
     
  17. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,970

    Yea. It don't have to be hot to test. Remember hot=swelling parts. Cold, parts shrink.