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|5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)|
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Originally Posted by da_bull
On my 90 (M20, 2.5L)Here is some info on cooling...
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Originally Posted by PhatCat
OK, this is the second time this happens and I still don't believe it's happening. How complicated does flushing and adding coolant to an 89 e34 can be?!! I decided to clean out my radiator and re-adjust coolant/water ratio for the hot weather. I drained the old fluid, added some coolant, ran the engine and added the rest. I know I'm supposed to unscrew the plastic screw near the radiator cap and when the engine warms up, it should release all the extra air from the engine.
Well, after the engine warmed, vapor was being released from the little hole as supposed to. But suddenly the engine started over-heating and I had to turn it off. This is the second time it happens. The first time, I brought a mechanic to do it and all he did was take out the screw and add coolant until it shoots out from the hole. I did the same thing but still over-heating. Any advice?
i had same problem these engines can be a bit of a bitch to bleed you get air locks in the engine block try following witch worked for me first of all jack up car at front as high as poss remove the radiator top hose and fill it with water with engine ticking over keep filling till it does not take any more recconect and reblead with engine running till you get a steady stream of water out of plastic bleed screw then retighten you may have to do this more than once to get rid of air locks be careful not to let water temp go into red as can blow head gasket regards david in u.k
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