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Water pump leak

Discussion in 'VR - VS Holden Commodore (1993 - 1997)' started by RodsVs, Oct 3, 2019.

  1. RodsVs

    RodsVs New Member

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    Hi all. My car is leaking coolant which seems to be coming from the back of the water pump. Is there a seal back there that needs replacing? If so how to get to it. Any advice will be appreciated 20191003_155256.jpg 20191003_155736.jpg
     
  2. losh1971

    losh1971 Well-Known Member

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    What engine? Can you post up a pic of it further away? I have dealt with lots of leaks on a Buick but i can't see from the pics what you have.
     
  3. RodsVs

    RodsVs New Member

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    3.8L eco 20191003_180511.jpg
     
  4. greenacc

    greenacc Searching for the billion

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    Yeah if the water pump is leaking you either need a new pump and gasket or just a gasket. Depends what is actually leaking. You are probably best to replace the whole thing and be done with it. Only cost about $40-50 bucks
     
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  5. RodsVs

    RodsVs New Member

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    Yeah I've got a new one but my concern was that it's not leaking from where the gasket and pump go into the motor but from behind it. Or will a new pump and gasket stop that anyway?
     
  6. Trevor loves holden.

    Trevor loves holden. Well-Known Member

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    Gee you took a fair bit off to replace the pump.
     
  7. woteva

    woteva NEED 4 SPEED

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    Is it leaking from the timing cover ??
     
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  8. RodsVs

    RodsVs New Member

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    Looks like it but I am replacing the harmonic balancer and crank angle sensor and thought I'd sort out the leak as well
     
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  9. Slowvxss

    Slowvxss Member

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    It's leaking from behind the timing cover.
     
    Last edited: Oct 3, 2019
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  10. Slowvxss

    Slowvxss Member

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    By those pictures it is
     
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  11. RodsVs

    RodsVs New Member

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    Looking at it you might be right. I'm guessing that's not going to be easy to change
     
  12. Slowvxss

    Slowvxss Member

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    You are pretty much there already, by memory there is 4 sump bolts going in the bottom of the timing cover and just the outer one's.
     
  13. vs-lover

    vs-lover Well-Known Member

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    and the harmonic balancer which is the hard part for those without the correct tooling.
     
  14. losh1971

    losh1971 Well-Known Member

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    Being an Eco, it's hard for me to say as it looks different to a Buick in a fair amount. But on a Buick the timing covers rarely leak. What does leak is the bolts that have access to coolant. I chased down a leak for six months and thought it was the timing cover. When all it was was the ground/earth bolt that goes through the timing cover had been disturbed and not resealed. I don't know if this bolt is just a Buick thing? So i can't say if you have one or not. But it sits to the passenger side, near the alt on a Buick and is one of the bolts for the timing cover.
     
  15. RodsVs

    RodsVs New Member

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    Time to head to the library and borrow good ol Gregory's car manual again
     
  16. losh1971

    losh1971 Well-Known Member

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    You know looking at the pic on the computer instead of my phone makes me wonder if it is just a bolt leak. Mine looked like the second photo on the first page. Mine only leaked after sitting all night. Couple of mech's said it looked like a leaking timing cover because of where the coolant sat.
     
  17. Trevor loves holden.

    Trevor loves holden. Well-Known Member

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  18. vs-lover

    vs-lover Well-Known Member

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    I have to agree with Losh on this point.

    I'd pull out the bolts one by one and reseal them individually. Don't take them all out at the same time. Just do one at a time and then replace the pump. Use plenty of "Stag"/ Permatex Gasket Goo on the bolts and you may well be pleasantly surprised.
     
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  19. Lex

    Lex Well-Known Member

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    My thoughts from looking at the photos (on a 42" screen), the leak is coming from the water pump bolt holes.
    I seal all the bolts on my water pump (ecotec).
    In other words, l agree with losh1974.
     
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  20. Trevor loves holden.

    Trevor loves holden. Well-Known Member

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