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The BMW Range
3 Series
E46
Expansion tank issue
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<blockquote data-quote="ezzo369" data-source="post: 542564" data-attributes="member: 22332"><p>It's normal. if you look carefully at the expansion tank, there should be a dash mark ( -----) and a label "KALT". Your radiator water should be in this position when in Cold / Kalt. BMW uses vacuum system. so when you open the bleed screw, the water will raise as the system is no longer in a vacuum state. same thing will happen when you running your engine with an opened engine oil cap - it will not run smoothly</p></blockquote><p></p>
[QUOTE="ezzo369, post: 542564, member: 22332"] It's normal. if you look carefully at the expansion tank, there should be a dash mark ( -----) and a label "KALT". Your radiator water should be in this position when in Cold / Kalt. BMW uses vacuum system. so when you open the bleed screw, the water will raise as the system is no longer in a vacuum state. same thing will happen when you running your engine with an opened engine oil cap - it will not run smoothly [/QUOTE]
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Expansion tank issue
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