Menu toggle

Agh! Water pump leaking after 3 1/2 years and 6k miles!

robdimond

robdimond

PCGB Member
Member
While I was fixing an oil leak (new oil cooler lines £££) I found a coolant drip which I've finally traced to the water pump. With the system under pressure it's weeping out from under the pulley (plus a separate drip from the radiator).
I fitted a brand new Laso water pump 3 1/2 years ago, so this is a bit of a surprise. Belts were tensioned as per the factory procedure with the tool. I can only think I made a mistake and got them too tight (perhaps the engine was too cold, I did it in a shed in the middle of winter).
So I don't think any choice but to do the water pump again.
 
Sorry to hear it Rob, earlirr in the year i had noticed whilst taking advance of a 30% off at ECP they have 2 different pumps (suppliers) - with discount i think it only cost around £80, think compared to the other pump was £200?

I picked one up but havent fitted it yet so unfortunately couldn't tell you if it was any good... but maybe someone else has tried one? Suspect you dont want to be doing this job again in 3 years time!
 
Well I did a marathon last Saturday and changed the water pump and also the leaking radiator. Old pump leaking without a doubt from the seal, steady drip when the system is pressurised. I've found my new pressure tester also makes filling the system much easier and quicker.
I think my tensioner spring must be out of adjustment and is getting the belt far too tight. I have read you should be able to (just about) turn the water pump pulley by hand and that is not the case. I've borrowed the tool from the club to see what it says.

Is it possible the old Porsche instructions are no longer relevant as the belt materials have improved over the years? The old belt never needed retensioning, I checked it a few times and it was always tight. Perhaps the setting for a used belt is all that is needed as they no longer stretch? Does anyone actually use the tool these days?
 
robdimond said:
I have read you should be able to (just about) turn the water pump pulley by hand and that is not the case.
Click to expand...


That's how I tension my 944 timing belt on a cold engine, but I don't think the official procedure states that. Having to change the water pump every 2nd belt change is a nonsense, caused by the belt tension being over tight when the block/head expands.
 
The tensioning tools get loadned out pretty much all the time, so someone's using them. I think to be fair it's mostly Tref as he does so many miles in his!

 
Driving only 6k miles in 3.5 years is asking for troubles.
I would not be surprised if the problem reappears with the new pump if you keep driving your car that little.
 
TTM said:
Driving only 6k miles in 3.5 years is asking for troubles.
I would not be surprised if the problem reappears with the new pump if you keep driving your car that little.
Click to expand...


That was pretty much my first thought. Granted that is 6K miles more than mine and these cars are never happier than when they are being used regularly.
 
You must log in or register to reply here.

Posts made and opinions expressed are those of the individual forum members

Use of the Forum is subject to the Terms and Conditions

Disclaimer

The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

Porsche
Lockton
Pirelli
Officially approved
Oracle Finance
WEX Esso
Collecting Cars
Archant Dialogue
Back
Top