Radiator coolant level dropped

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sirius
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Radiator coolant level dropped

Post by sirius » Sun Sep 10, 2017 4:48 pm

Hi all,
My local mechanic just replaced the radiator on my bongo. He didn't bleed the system (didn't know that when the bongo was collected by my wife) and by the time my wife drove the 10 minutes home the air in the system was firing like a machine gun in the top plastic tank.

I've bled the system using the see saw method this morning, ........2 hours later heaters hot, rear o/s hoses warm etc. coolant levels all at topped up and took the van for a 20 mile drive to check it out. Temp gauge sat just below the middle, front and rear heaters blowing hot air. Got home and checked coolant level and noticed it had dropped slightly went out to van an hour later and it had dropped to low. There was no evidence of a leak when I bled the system.

Is this normal or is the drop in coolant showing a leak elsewhere? It's presently raining so can't see any leaks/coolant patches on the ground. :)
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mikeonb4c
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Re: Radiator coolant level dropped

Post by mikeonb4c » Sun Sep 10, 2017 5:14 pm

I think this could be further air being expelled. It you're really worried you could redo the bleeding process with draining the system in case any further air is present. After all that i'd expect no further drop except that of course the header tank level drops as the engine cools.
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haydn callow
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Re: Radiator coolant level dropped

Post by haydn callow » Sun Sep 10, 2017 7:46 pm

Should be o k. Top it up and keep a eye on things.
http://www.coolantalarm.co.uk
Developer of the Mazda Bongo Coolant loss Alarm
Also BMW Clocks
sirius
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Joined: Wed Jan 02, 2013 12:47 pm
Location: Fife

Re: Radiator coolant level dropped

Post by sirius » Sun Sep 10, 2017 8:45 pm

Hi Guys,
Thanks for the replies. I'll keep and eye on the coolant level each day this week.

Haydn,
I found the videos demonstrating how to bleed the system really useful and reassuring. Much appreciated.
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haydn callow
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Re: Radiator coolant level dropped

Post by haydn callow » Sun Sep 10, 2017 8:47 pm

Get yourself a low coolant alarm for peace of mind.
http://www.coolantalarm.co.uk
Developer of the Mazda Bongo Coolant loss Alarm
Also BMW Clocks
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