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Old 12th October 2016, 20:36   #1
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Default Coolant loss

Driving about 500miles a week and after each week the coolant needs topping upto about 1/4 to 1/2 a pint. I know its leaking from where the water pump connects onto the engine.
Would the pump be failing, if so how can I tell?
Or is it just a knackered seal that I can worry about another day and just make sure its always topped up?
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Old 12th October 2016, 21:29   #2
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So it is a diesel, check in any case the pump
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Old 12th October 2016, 21:35   #3
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could be leaking from the thermostat O ring, I have seen this a few times.
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Old 12th October 2016, 21:55   #4
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The ring is at the end of the small black pipe going into the plastic thermostat housing...
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Old 13th October 2016, 08:36   #5
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is there a method to check the pump?
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Old 13th October 2016, 08:36   #6
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I can but hope! Is there any tips when checking it out as its a right pig to get to
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Old 13th October 2016, 09:20   #7
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Having had a closer look again today it does appear to be leaking from the thermostat housing seals, or Oring, I will try changing the O ring this weekend
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Old 13th October 2016, 12:37   #8
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I did this job a few weeks ago-it was a pain but not too bad. The main thing is blind loosening the bolts securing the pipe along the back of the block. I removed the turbo/intercooling ducting to make life easier.The new o-ring went in ok and fingers crossed its stayed sealed. Note: some of the bolts on the black metal pipe are attached to heat shield type things are dont stop the pipe being bent back! I accessed the pipe from above and below the car!
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