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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)
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?
On my 90 (M20, 2.5L) there is also a bleeder screw on the motor that is actually the highest point in the cooling system. This has to be bled too. Here is some info on cooling. Some good reading on this site also.
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On my 90 (M20, 2.5L)Here is some info on cooling...
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I'm preparing for a nice coolant system flush too. Here are some tips that might be helpful...
* Check hoses for wear, bulging, cracks or brittleness.
* Check hose clamps if they’re broken, stripping, or worn out.
* Replace your radiator cap – cheap insurance for maintaining correct cooling system pressure.
* Check or replace your belt – if it hasn’t been done in a while, it’s a great time to change it.
* Check your tensioner, and idler pulleys for bearing noise or failure
But before that I would like to know easy ways on removing and installing bmw water pump.
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