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water pump?

Discussion in 'Truck & Equipment Repair' started by farmerkev, Mar 8, 2009.

  1. farmerkev

    farmerkev Senior Member
    Messages: 847

    I have a 1996 Chevy Cheyenne 2500, and there is a leak somewhere by the rear of the waterpump, that I thought might be the waterpump, or the gaskets, so I pulled it and it looks fine, and the gaskets dont actually look all that bad either, what else back there could be leaking incase its not the gaskets?
     
  2. tim096

    tim096 Senior Member
    from wny
    Messages: 100

    The intake manifold
     
  3. farmerkev

    farmerkev Senior Member
    Messages: 847

    How could you tell if they went bad, where would they leak?
     
  4. NICHOLS LANDSCA

    NICHOLS LANDSCA PlowSite Veteran
    Messages: 4,310

    They can leak anywhere along the intake/head. I'd be willing to bet it's the intake. The Vortec motors were notorious for intake gaskets, plastic gasket with a rubber insert. I've done plenty of them.
     
  5. farmerkev

    farmerkev Senior Member
    Messages: 847

    How hard? Im still learning, but so far my Chilton book and me havent found something we couldnt overcome!purplebou
     
  6. hydro_37

    hydro_37 PlowSite Veteran
    from iowa
    Messages: 3,790

    The waterpump may look fine but it will leak from a little hole in the bottom of it if the seals are bad. But I will bet it is the crappy gaskets too. Pull the intake and replace all the gaskets and get a new water pump.
     
  7. CityGuy

    CityGuy PlowSite Fanatic
    Messages: 16,989

    Is it leaking from the weap hole? If so its the pump. THose pumps go bad all the time on the series truck. Not to hard t fix either.
     
  8. ABES

    ABES PlowSite.com Addict
    from MN
    Messages: 1,322

    Since youve already got the pump off I would replace it. They are not that expensive. I had the intake gaskets done on my truck for about $600. The tricky part is the distributor, if you dont get it back in its correct position your timing will be off and it either wont run or it will run very bad. You cant use a timing light on the 96 + vortecs it requires an expensive scan tool to set the timing (not the cheap auto parts store ones).
     
  9. 24v6spd

    24v6spd Senior Member
    Messages: 615

    Check near the weep hole for evidence of staining, that is a sign it has been leaking. how do the bearings feel?
     
  10. farmerkev

    farmerkev Senior Member
    Messages: 847

    Not a clue:confused:, Im in a little over my head on this one I think.:cry:
     
  11. CityGuy

    CityGuy PlowSite Fanatic
    Messages: 16,989

    where in mn are you
     
  12. farmerkev

    farmerkev Senior Member
    Messages: 847

  13. augerandblade

    augerandblade PlowSite.com Addict
    Messages: 1,054

    Just replace waterpump and gaskets for now, then if you still have a leak go for intake etc. To bad ya didnt pressure test the system after the engine was warmed up a bit. Under a pressure it will show.
     
  14. farmerkev

    farmerkev Senior Member
    Messages: 847

    I think the water pump is still okay, and I really only have the $$ to replace one or the other right now. I think I will reinstall the WP, and hope it worked, or go for the intake if not.
     
  15. CityGuy

    CityGuy PlowSite Fanatic
    Messages: 16,989

    I woud repace the water pump its about a 40 dollar pump on that truck and 5 or so core. Most auto parts stores shoud have one on the shelf. You already have it out and for that price its your best bet. JMO
     
  16. farmerkev

    farmerkev Senior Member
    Messages: 847

    Im thinking I will, its just that, Im not sure its the problem, and I really wont have ANY cash for the intake issues if thats the problem.
     
  17. 24v6spd

    24v6spd Senior Member
    Messages: 615

    I would definitly replace the water pump since you have it off already. bearings on your old pump should spin smoothly, there should be no play in the shaft. if the seals have gone bad it will leak out of the weep hole which is probably what is happening.ussmileyflag
     
  18. ABES

    ABES PlowSite.com Addict
    from MN
    Messages: 1,322

    Yes if you do reinstall it check the weep hole with the truck running and look for any coolant coming out.
     
  19. farmerkev

    farmerkev Senior Member
    Messages: 847

    I just looked at the weephole on it, and it looks bone dry. I can see where it got dripped on/around from the leak, but the weep hole is bone dry. Im really wanting to look into that truck on craigslist. But I dont have the $$ for the repair, so the truck is out of the question for a while too, but for $550, it seems like a much better deal than duumping too much into mine that will just break back down.
     
  20. chcav1218

    chcav1218 Senior Member
    Messages: 954

    get it, build one good truck