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The BMW Range
3 Series
E46
Radiator top hose hard even when engine is cold
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<blockquote data-quote="jarance" data-source="post: 723221" data-attributes="member: 21"><p>Try reading this.</p><p></p><p>Extract from below link</p><p>Lastly, during the combustion process the high pressures in the cylinder can push exhaust gases past the head gasket into the engine cooling system. The exhaust gases will be trapped in the cooling system and will be circulated through your engine and into the radiator. During normal operation your engine’s cooling system remains under pressure, so never remove the radiator cap while the engine is operating or still warm. If your vehicle has a coolant overflow tank you can check that for the presence of bubbles. To be certain you can purchase a test kit from your local auto parts store that will chemically check your engine coolant for the presence of exhaust gases.</p><p></p><p></p><p></p><p><a href="http://www.gobluedevil.com/blog/what-are-the-symptoms-of-a-blown-head-gasket/" target="_blank">http://www.gobluedevil.com/blog/what-are-the-symptoms-of-a-blown-head-gasket/</a></p></blockquote><p></p>
[QUOTE="jarance, post: 723221, member: 21"] Try reading this. Extract from below link Lastly, during the combustion process the high pressures in the cylinder can push exhaust gases past the head gasket into the engine cooling system. The exhaust gases will be trapped in the cooling system and will be circulated through your engine and into the radiator. During normal operation your engine’s cooling system remains under pressure, so never remove the radiator cap while the engine is operating or still warm. If your vehicle has a coolant overflow tank you can check that for the presence of bubbles. To be certain you can purchase a test kit from your local auto parts store that will chemically check your engine coolant for the presence of exhaust gases. [URL="http://www.gobluedevil.com/blog/what-are-the-symptoms-of-a-blown-head-gasket/"]http://www.gobluedevil.com/blog/what-are-the-symptoms-of-a-blown-head-gasket/[/URL] [/QUOTE]
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Radiator top hose hard even when engine is cold
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