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how do you know if water pump is broken?
omega0684 - 27/5/09 at 03:13 PM

as title says please


Miks15 - 27/5/09 at 03:15 PM

ive the bearings collapsed you will feel excessive play on the pulley. Other than that remove it and check the finns


britishtrident - 27/5/09 at 06:06 PM

They usually the seal fails or seals and bearings fail but on a lot of recent engines the water pump impeller is made of plastic and seperates from the shaft hence loss of water circulation recent VW group cars are very prone to this and it is not unknown on the Rover KV6.

[Edited on 27/5/09 by britishtrident]


MikeRJ - 27/5/09 at 08:03 PM

quote:
Originally posted by britishtrident
water pump impeller is made of plastic and seperates from the shaft


The earlier V6 Duratecs were reknown for this as well.


02GF74 - 27/5/09 at 08:15 PM

if you turn it in the correct direction and no water is pumped, thjen it is duff.

in olden days, the pump rotor was made from cast iron and would rust over time. antoehr problem disintegrating rotor due to cavitation, whcihc occurs at very high rpm. in a tuned high revving engine, either a smaller diameter crank pulley is fitter or larger diameter water pump and alternator pulleys fitted.


DarrenW - 28/5/09 at 08:16 AM

If you suspect yours is broke then changing it wont be too expensive. I have a new one in the garage as a spare. Not sure how much they are new but probs not a lot.


Guinness - 28/5/09 at 08:35 AM

Could you replace a section of silicone hose with a section of clear hose? Maybes from B&Q?

Obviously not as a permanent measure, but while the coolant is cold / warm and at low pressure?

Mike


omega0684 - 28/5/09 at 09:07 AM

quote:
Originally posted by Guinness
Could you replace a section of silicone hose with a section of clear hose? Maybes from B&Q?

Obviously not as a permanent measure, but while the coolant is cold / warm and at low pressure?

Mike


this is what i was thinking of doing


wilkingj - 28/5/09 at 09:37 AM

quote:
Originally posted by omega0684
quote:
Originally posted by Guinness
Could you replace a section of silicone hose with a section of clear hose? Maybes from B&Q?

Obviously not as a permanent measure, but while the coolant is cold / warm and at low pressure?

Mike


this is what i was thinking of doing


Hmm remember not much will flow until the thermostat opens.

Check the thermostat is opeating correctly.
Take to the kitchen, put in a pan of water, heat. Check temperature with thermometer, and check it opens / closes properly at the right temperatures.

Simples chk