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Posted

Hi all, it looks like I am losing coolant,slowly from somewhere, but not obvious. Only clue has been that I am seeing the reservoir level slowly reduce so am adding coolant more frequently. Im interested to learn if there are there any favourite places to look on the 650i that may yield some clues or is the reservoir cap a potential area of concern, i.e. cap needs replacing every so often.

Any advice gratefully received.   

Posted

As an add on, it looks like Ive got some visible scaling onthe floor pan , visible from the top of the engine down through the belts. This might be an indication of a bottom hose on way out. Will advise if I find out more, will also take some pics.  

  • 2 weeks later...
Posted

Hi Greydog, well it seems that the water pump may be the culprit. Looks like I have a weeping from the front of the pump on to a lower hose and the floor pan. Im suspecting a  gasket has gone so hopefully just a gasket replace but will report back. Any other thoughts welcome as cant get pics from above will need to go from below to get pics. Chances of water pump being U/S?

Posted

Hi Paul

Could be gasket or could be the shaft seals, As the pump has to come off I would change it as a precaution a water pump and coolant is only about £150 maybe change the thermostat to

Just my thoughts

Dave

  • 1 month later...
Posted

OK, update on slow water leak. An inspection found that the bottom main hose had developed a leak through a sensor which sits on top of it. Only became apparent when under pressure. All other sources are visibly clear, water pump gasketing etc etc , which is good news for me. 

Spring cleaning coming up and canvas roof to be done. Just working away bits of green algae with my trusted tooth brush first before recolouring and proofing the roof.   

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