hobson Posted January 28, 2011 Share Posted January 28, 2011 I've been battling to get our heater working for a few weeks now, it ran dry in december when the waterpump and gasket went. after fitting a new pump and doing the P gasket as well, it seemed to work well for a few days but then kept going cold intermittently. I've just fitted a new thermostat and filled the coolant as it was empty again, but to no avail. after a drive around tonight to get it up to temperature, it went warm very briefly, but then went cold again. It's had good antifreeze in it all winter so i doubt the heads cracked, and i can't see anything leaking from anywhere either. Any ideas please? Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted January 29, 2011 Share Posted January 29, 2011 hobson, I've had the same problem in the past. Have you bled the heater box ? crack the jubilee clip on on of the hoses on the heater end and hopefully you should feel escaping air followed by a return to heat HTH Mo Quote Link to comment Share on other sites More sharing options...
hobson Posted January 29, 2011 Author Share Posted January 29, 2011 No i haven't done that, i didn't realise it needed bleeding, though it makes sense! is there any particular tube to loosen? i can't think at the moment how many tubes go into it! if i'm lucky, i'll get it working by summer! Quote Link to comment Share on other sites More sharing options...
western Posted January 29, 2011 Share Posted January 29, 2011 2 hoses to heater one is feed from cylinder head water jacket, other is return. Quote Link to comment Share on other sites More sharing options...
hobson Posted January 29, 2011 Author Share Posted January 29, 2011 Thanks for that, so whats the best procedure to bleed the system? including the heater matrix? Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted January 30, 2011 Share Posted January 30, 2011 Be sensible, get the engine warm but not scalding hot! With the engine running carefully slacken each hose at the heater end one at a time (you only want the air and a little coolant to escape, not blow the hose off ). You will probably get some air out before any coolant escapes, that's good. Just be careful and give it a go, it's how we all learn and keep an eye on the surge tank coolant level. If this doesn't work then back to the drawing board. HTH Mo Quote Link to comment Share on other sites More sharing options...
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