Question about 2001 Volkswagen Beetle

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2001 Volkswagen Beetle 2.0L - 4 months ago the water pump was leaking from the weephole behind the pulley. I replaced the water pump with one from NAPA, timing belt, etc. It ran great for a couple days until the brand new water pump began to leak from its weephole. I figured it was a faulty pump, took it off, put a new one on - same thing! New water pump leaking from the weephole! I did it once more with a new water pump from OReilly, same thing!! Finally I got fed up and ordered an OE Water Pump from VW. It ran great for about 3 months and now IT is leaking from the weephole ! What is going on? Yes I have looked at it very closely and it is coming from the weephole right behind the pulley, not from the gasket or seal. Why would it keep doing this? There is no way I am going to get 4 new water pumps all with faulty weepholes, something is wrong with the car causing this. Aren't the weepholes there to relieve pressure if it gets too high or something? Any help on this would be greatly appreciated. I will pay $50 to the person that solves this.

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The only thing I can think on is belt tension. You are turning the tensioner counterclockwise and aligning the arrow with the cut out on the head right? But this is a guess only, even if the belt was too tight it should make noise and go longer than that before the bearing would wear enough for the internal seal to leak.

Posted on May 29, 2011

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  • Matt May 29, 2011

    Yes, I'm sure the belt tension is correct. The arrow is lined up with the cut-out. As far as turning the tensioner, instructions say a couple times clockwise, a couple times counterclockwise, etc - don't remember exactly but I followed the install directions by the tensioner manufacturer.

  • Clint Smock
    Clint Smock May 29, 2011

    I fiqured you had it right after changing it 4 times. I'll bet you can do that job in your sleep.

  • Matt May 29, 2011

    haha, first time - 4.5 hours. 4th time - 1.5 hrs. I have it down to an art almost. I should advertise and start doing water pumps and all 2.0L beetles in my area for $100 plus parts.

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WATER PUMP HAS A PLUG IN THE HOUSING THAT SHOULD BE FACING DOWN. TORQUE WATER PUMP BOLTS 11 FT LBS. WARNING IF YOU OVER TIGHTEN WATER PUMP MOUNTING BOLTS IT WILL CAUSE WATER PUMP SHAFT BEARING PREMATURE FAILURE WHICH WILL CAUSE WEEP HOLE LEAKING.

Posted on May 29, 2011

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  • Matt May 29, 2011

    Are you entirely sure on this? I've never seen a plug in the housing on these water pumps. Shoot 11lbs? If that's the case, I was over, my torque is usually just set at 18ft/lbs. By no means did I crank that puppy on tight, but maybe a bit too tight. I'll have to check on that.

  • Jonah Oneal May 29, 2011

    YEP OVER TIGHTEN WATER PUMP BOLTS WILL CAUSE PREMATURE WATER PUMP BEARING FAILURE.

  • Matt May 29, 2011

    Ok, not good. This will cause fluid to leak from the seal or weephole? This last Water Pump worked fine for 3 months, why did the others go bad in 2 days? I really don't remember tightening the **** out of those things, but if you say only 11 lbs, maybe I did. I will look into this and keep you posted.

  • Jonah Oneal May 29, 2011

    LUBRICATE WATER PUMP NEW ORING WITH COOLANT BEFORE INSTALL PUMP TO ENGINE, MAKE SURE YOU NOT DAMAGING THE O RING IT WILL LEAK ALSO

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You will need to run a pressure check on the cooling system to see if there is a potential issue with a bad head gasket allowing pressure to get into the cooling system. You should also look to see if the radiator cap or coolant expansion tank cap is allowing excess pressure to come out and check to see how full the expansion tank is when the car is at operating temperature. With to much pressure in the system it has to go somewhere and the weep hole is one of those area's though it usually comes last.

Posted on May 29, 2011

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You need to do a serious coolant flush and pressure test. Also change your oil and add RISLONE to the oil. You have something im your coolant that is tearing the seal up. I bet if you put a gallon of your cars water thru a t-shirt, you will see a problem.

Posted on May 29, 2011

  • Matt May 29, 2011

    bobcollins59 - every time (4 times) I changed the water pump, I completely drained the radiator and cooling system, opened the bottom water hose that goes into the oil cooler and ran some distilled water through the system until drainage was clear. Is that enough or do you think it needs a more thorough flush?

  • bob c May 29, 2011

    Based on previous replies. I would still dothe t-shirt thing but leave the rest alone.

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