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Guest Anonymous

76 BMW cooling woes...

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Guest Anonymous

Hello, my engine will not circulate coolant when started, hence the head gets hot and the thermostat never opens. I have changed the water pump and thermostat...Are there reverse water pumps maybe??? Did they give me one for another year???? Any ideas???

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Guest Anonymous

suspect an air bubble in the system...needs burping.

Mike

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Guest Anonymous

As per McCartneys book.

This allows air to escape, but not enough water to really matter.

Remove the T-stat and look down the straight open end. On the copper/brass baffle, you need to drill a small-1mm-hole. Look at both sides to make sure you are going just through the baffle. Should poke through VERY easy.

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Guest Anonymous

1) Raise front of car up (jack it up).

2) Set heater control to hot

3) Make sure rad is filled.

4) leave rad cap off

5) Start car

6) Squeeze the upper radiator hose as car is warming up

7) Water will rise up and when the t-stat opens air will escape.

8) Put cap back on once car is almost up to operating temp (water may start to expand out the top before that).

I've never had an air issue using this method. No need to drill a hole in the t-stat either.

Did you boil your thermostat to double check it?

Perhaps you have some blockage somewhere.

-Justin

'76 02

'97 m3

http://www.bmw2002.net

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Guest Anonymous

after you try the other good suggestions. Some new thermostats are faulty. If nothing else works, try another thermostat.

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Guest Anonymous

Thank you everyone for your help, I bled the air and she's back on the road, nice and cool. The temp guage is a bit off though, so I'll attack that next...

Once again THANK YOU ALL !!!!!

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