Jump to content
×
×

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

Recommended Posts

Hi all,

Three weeks ago I got about 30 yards out of the drive and the Battery/Alternator warning lit up. Back in the garage the battery measured 12.6 volts. When I started the car it dropped to 11 volts = bad alternator. When I got the belt and alternator of I notice the water pump was oozing from the bearing which was clunk clunk loose. After replacing everything with new components, gaskets and coolant the water pump started leaking immediately from around the bottom of the gasket. I had tightened everything to spec. I gave all the bolts another 1/4 turn and the leaking slowed to just two or three drops overnight. I have not run the car yet as I still have to replace the spark plugs and rebuild the exhaust system as four of the nuts have rusted away to nothing, totally gone! The others I have to cut off with a Dremel tool. Anyway will the leak stop after a few heating cycles or am I going to have to do the job again with a new gasket? Should I use a sealant? All mating surfaces were meticulously clean.

Share this post


Link to post
Share on other sites
    You can remove these ads by becoming a Contributing Member.

Are the water pump and gasket the genuine articles from Porsche?

Share this post


Link to post
Share on other sites

Odd.

 

If it's definitely not a hose which has not been securely clamped, then it looks like you'll need to do it again with another gasket.

 

I wouldn't tighten the bolts any further ... and sealant should not be necessary.

Share this post


Link to post
Share on other sites

Definitely not a hose leak. I can see exactly where it is coming from. Since it is so slow I think I will drive it a little and see what happens just for fun. I will report back. One fellow told me that heat cycling the casting of the water pump might relax it so if there were the slightest warp in it that it might settle in. Personally I think that is BS. I think that the pump would have to get a whole lot hotter than 200 degrees to change the shape of the casting but what do I know. By the way I was jinxed from the beginning. My pump came with 2 gaskets! 

Share this post


Link to post
Share on other sites

Perhaps if and when you redo it, you can examine all the mating surfaces and make sure they are smooth and flat. Also make sure there are no nicks on the gasket itself.

if everything checks out, it is indeed very odd because the gasket is compressible and when compressed it should seal perfectly. Another thing you may want to try is to clean the threads of the water pump bolt holes very carefully (by a chaser).

Share this post


Link to post
Share on other sites

Has anyone tried Bar's Leaks? It is supposed to stop small leaks. Apparently GM uses it in their cars which I know is not saying much.

Share this post


Link to post
Share on other sites
2 hours ago, Mijostyn said:

Has anyone tried Bar's Leaks? It is supposed to stop small leaks. Apparently GM uses it in their cars which I know is not saying much.

 

Leak additives are band-aids, often ending up causing clogging issues in the radiator and heater cores.  If your pump is leaking, replace it.

Share this post


Link to post
Share on other sites

Well, I got the car finished today and everything seems to be working fine. So I went out and drove it like I stole it for 30 minutes.

The car is almost entirely cooled off. NO DRIP!! I did have to add about 1/2 gallon coolant but I think that is from just shaking the air loose that got into the system. 

The car is also not stone cold yet so I'm still sort of holding my breath. 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.