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#279196 - 31st Dec 2008 7:23pm how do you know if your water pump is broke ?
phalinmegob Offline

Wise One

Registered: 26th Dec 2008
Posts: 818
Loc: tranmere
this probably sounds like a really stupid question but my knowledge of cars is very limted.been losing water steadily for a couple of weeks but now it is really bad,the car is only a cavalier 1.7td(dont laugh) with isuzu engine and have been told that i am losing water from the water pump but i cannot actually see where it is coming from,just that it is running down the road.is it likely just need a new seal or something or is it a new pump how do you tell?...the car seems to run fine but i am constantly filling up with water now..also need my valve inlet shims doing but i dont think this has anything to do with this problem has it? car dont wanna start when cold....sorry for the long post

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#279202 - 31st Dec 2008 7:41pm Re: how do you know if your water pump is broke ? [Re: phalinmegob]
BMW Joe Offline
Wiki Master

Registered: 30th Apr 2006
Posts: 12369
Loc: Birkenhead
You'll have to find where its coming from.

Could just be a seal somewhere or it could be your radiator.

Leave it parked up, running and look on the ground.

It will fall to the lowest point so work your way up.

Have you checked your oil?



How do you know you if need your inlet valves need doing??

That wouldn't affect it anyway.
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#279217 - 31st Dec 2008 8:15pm Re: how do you know if your water pump is broke ? [Re: BMW Joe]
phalinmegob Offline

Wise One

Registered: 26th Dec 2008
Posts: 818
Loc: tranmere
[quote=BMW Joe]



How do you know you if need your inlet valves need doing??

apparently it is a very common fault with this particular engine and is a real bugger to start when it is cold,by that i mean "really" cold like tonight.had to relace 2 starter motors last winter, but that was still cheaper than getting the shims done at the time.
anyway back to the water pump, am i to presume provided the car has water in it the pump is working if i am getting heat from the heaters or would that still happen even if the pump was not working?

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#279219 - 31st Dec 2008 8:20pm Re: how do you know if your water pump is broke ? [Re: phalinmegob]
BMW Joe Offline
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Registered: 30th Apr 2006
Posts: 12369
Loc: Birkenhead
IFAIK, you might get heat from the heaters even if your pump doesn't work, although it might not be very warm.

Are both the top and bottom hose to your radiator warm/hot? If so, then your pump is working.
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#279221 - 31st Dec 2008 8:25pm Re: how do you know if your water pump is broke ? [Re: BMW Joe]
phalinmegob Offline

Wise One

Registered: 26th Dec 2008
Posts: 818
Loc: tranmere
thanks i will check that tommorrow,is replacing a pump a costly difficult job,had a quick look again and it definatly is coming from the area where the pump is.

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#279252 - 31st Dec 2008 10:17pm Re: how do you know if your water pump is broke ? [Re: phalinmegob]
Johnny Alan Offline
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Registered: 15th Sep 2004
Posts: 2082
Loc: wirral
Originally Posted By: phalinmegob
thanks i will check that tommorrow,is replacing a pump a costly difficult job,had a quick look again and it definatly is coming from the area where the pump is.


Personally I would just change the water pump for a new one only about 25 and the time which doing it at home would only be a couple of hours. The coolant may still be getting pumped aroung the engine but leaking at the back seal or the face gasket where it mounts to the block.
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#279255 - 31st Dec 2008 10:22pm Re: how do you know if your water pump is broke ? [Re: Johnny Alan]
Johnny Alan Offline
Forum Addict

Registered: 15th Sep 2004
Posts: 2082
Loc: wirral
also I would attempt doing the shims yourself to. Just get piston to tdc and measure the clearance with a feeler gauge, compare this with what it should be. If out of acceptable tolerance, remouve shim and measure with a micrometer or vernier. From the measurment taken and the size feeler gauge used, the tollerance required you are then able to calculate the size for a new shim, only a couple of quid each. Had to do this on my bike the other week and cause it is a ducati and desmo it has closing shims to so ends up being quite costly lol.
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#279258 - 31st Dec 2008 10:41pm Re: how do you know if your water pump is broke ? [Re: Johnny Alan]
Mark Offline


Wiki Master

Registered: 9th Nov 2003
Posts: 21086
Loc: Wirral
Check under your oil cap?

To see if the oil has changed colour?
I was loosing water and it was the head gasket,
and it was leaking into the combustion chamber so the only clue was the exhaust seemed to be steaming when ticking over, only lightly, and the top hose on the water coolant was solid no give.

Just something else to consider.
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#279259 - 31st Dec 2008 10:51pm Re: how do you know if your water pump is broke ? [Re: BMW Joe]
BMW Joe Offline
Wiki Master

Registered: 30th Apr 2006
Posts: 12369
Loc: Birkenhead
withthat

Originally Posted By: BMW Joe
Have you checked your oil?
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#279261 - 31st Dec 2008 11:09pm Re: how do you know if your water pump is broke ? [Re: BMW Joe]
phalinmegob Offline

Wise One

Registered: 26th Dec 2008
Posts: 818
Loc: tranmere
oil looks fine or at least it did a few days ago when i checked it,nice and black with no scum or foam, i can physically see it leaking water from around the pump area just cannot tell exactly where.thanks to johnny for the advice but he may as well of been speaking in klingon or something,way past my abilities.it took me 9 hours to change a starter motor last year after following a page from a borrowed haynes manual (which the owner has now lost).this sounds like a job best left to experts. GET THE PISTON TO TDC !!!!!!! i dont even know where or what a shim is,lol

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#279263 - 31st Dec 2008 11:13pm Re: how do you know if your water pump is broke ? [Re: phalinmegob]
BMW Joe Offline
Wiki Master

Registered: 30th Apr 2006
Posts: 12369
Loc: Birkenhead
lol

yeah, gt the valves sorted by someone who knows what they're doing.

try buying a new gasket for the water pump?

You should be able to remove it by taking off an auxiliary belt, removing 3 or 4 bolts, and it should come out.

You can buy replacements from Halfords or LVW for less than a fiver.

If you can replace a starter motor, replacing the water pump should be just as simple (or difficult in your case lol).
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#279266 - 31st Dec 2008 11:27pm Re: how do you know if your water pump is broke ? [Re: BMW Joe]
phalinmegob Offline

Wise One

Registered: 26th Dec 2008
Posts: 818
Loc: tranmere
thanks guys

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#279272 - 1st Jan 2009 12:26am Re: how do you know if your water pump is broke ? [Re: phalinmegob]
MrPhil Offline
Forum Master

Registered: 14th Apr 2006
Posts: 2367
Loc: Prenton
One moment here, is your water pump ran by the cambelt? if so don't even bother if attempting to change it if you havent got the right tools. Way to much hassel.

if you need to drive the car with the leak undo the headertank top (coolant cap) by a turn to release pressure.

Hvae you a digi cam? if so take lots of photo's and Upload them then we maybe able to help more as not seeing the leak is like peeing in the wind.
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#279277 - 1st Jan 2009 1:16am Re: how do you know if your water pump is broke ? [Re: MrPhil]
StuyMac Offline

Wiki Master

Registered: 24th Nov 2003
Posts: 12002
Loc: Wirralshire
If the water pump has failed the car will overheat, not just lose water.

Sounds to me like a water leak - it could be the seal around the pump, but if the car is not overheating it wont be the actual pump that has failed.
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#279297 - 1st Jan 2009 11:59am Re: how do you know if your water pump is broke ? [Re: StuyMac]
phalinmegob Offline

Wise One

Registered: 26th Dec 2008
Posts: 818
Loc: tranmere
when i fill up with water,car runs fine and the heaters give out heat,when the heaters start to blow cold i know the car has run out of water and then the tempreture guage starts to rise up,so i am pretty sure it is just the seal around the pump,i have been reliably told that this pump does not run with the cambelt but i am still not competant enough to have a go so i will have to wait till i have some dosh and stick it in a garage,as one of the earlier posts said i may just get the pump changed anyway and get the shims done at the same time.thanks for all of your replies

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