"ksdawg01" <none@[EMAIL PROTECTED]
> wrote in message
news:1112798_26b4e28e6276c8314e3c4423475a46d4@[EMAIL PROTECTED]
> hi,can anyone help.bmw528i 1996. she is overheating,checked
> thermostat-ok,checked waterpump-ok water does,nt seem to be getting
> around the system. we tried bleeding and got alot of steam.going to do
> compression test tomorrow but no signs of head gasket,ie:water in
> oil,oil in water,white emmission from exhaust. we are stumped.anyone
> have experience wth this . all help very gratefully received. many
> thanks. steve
What's the history of the car's cooling system service? Did you just
change
the coolant? It's possible to considerably underfill the system if you
fail
to follow procedure. Also, with a 12 year old machine, it's possible the
water passages are blocked by the ac***ulation of corrosion in them.
If the system's been bled and full to capacity, it might be door number
two.
BMW used to recommend coolant change every two years from manufacture
date.
It's now 4 years, but I suspect that's a nod to the cost of "free"
maintenance, not a change in the vehicle or coolant properties.
Over-the-counter coolants are not recommended and can contribute to the
problem. So, it's possible a failure to change the coolant frequently or
with the wrong coolant has clogged the cooling passages. Given the
difficulty and expense of fixing the problem, I'd check and recheck
everything else first.
R / John
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