opelbits

iTrader: (5)

So, I had an overheating issue last summer. Not really 'overheating', but running warmer than usual (varying from 1/4 to 1/2 on gauge when it used to be rock steady at about 1/3). Replaced thermostat, radiator, all hoses, and flushed block. No more 'varying'. Except that it would spit a little coolant into the reservoir tank and then not suck it back in. Replaced radiator cap. No more problem.
6 weeks later it has started the spitting-thing again. Every couple of days I have to bleed and fill the radiator and empty the coolant tank.
All replacement parts are from Mazdatrix.


Any ideas?

DubbayoC

sounds like you have a blown water o-ring. rebuild or seal it

opelbits

iTrader: (5)

No evidence of combustion gases pressurizing the cooling system. Plus it seems erratic, it goes away for six weeks then comes back?

opelbits

iTrader: (5)

Thaniel

That sounds just like what my car is doing. Mine started when the radiator cracked. New radiator, cap, thermostat etc. Thought it I had it licked and the spitting into the overflow and not sucking it in is back. It is quite irritating.

Probably a coolant seal. If it's that I think my car is done. I've about had it with it. I am wondering if that's what cracked the radiator.

Be sure to let us know if you get it fixed.