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The BMW Range
5 Series
engine cant cool down problem T T
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<blockquote data-quote="c-square" data-source="post: 173992" data-attributes="member: 135"><p>It is unusual for the engine to continue to retain such amount of heat and the radiator hoses still having pressure in it after leaving the car overnight. Typially it should cool down completely around 3-4 hours. Probably some one sneak out in the wee hours in the morning to have a joy ride in your car while you are fast asleep. Anyway, since you mentioned that you recently did a top overhaul and also skimmed the head, changed the gasket and the works, maybe the gasket did not seat well on the cylinder head when your mech re-installed the head after overhaul. I believe a special tool is needed to screw in the cylinder head to ensure that the head goes down and are tightened in a precisely parallel fashion. I had that problem when I did my 1st overhaul and pressure is still retained in my hoses (indicated by hard hoses) even after the car was left overnight. The 1st top overhaul lasted for slightly over 1 year and the car overheated again. Had no choice but to do the top overhaul the 2nd time, but this time went to a different mechanic. Touch wood, so far so good. No more overheating problem and the hoses are soft</p></blockquote><p></p>
[QUOTE="c-square, post: 173992, member: 135"] It is unusual for the engine to continue to retain such amount of heat and the radiator hoses still having pressure in it after leaving the car overnight. Typially it should cool down completely around 3-4 hours. Probably some one sneak out in the wee hours in the morning to have a joy ride in your car while you are fast asleep. Anyway, since you mentioned that you recently did a top overhaul and also skimmed the head, changed the gasket and the works, maybe the gasket did not seat well on the cylinder head when your mech re-installed the head after overhaul. I believe a special tool is needed to screw in the cylinder head to ensure that the head goes down and are tightened in a precisely parallel fashion. I had that problem when I did my 1st overhaul and pressure is still retained in my hoses (indicated by hard hoses) even after the car was left overnight. The 1st top overhaul lasted for slightly over 1 year and the car overheated again. Had no choice but to do the top overhaul the 2nd time, but this time went to a different mechanic. Touch wood, so far so good. No more overheating problem and the hoses are soft [/QUOTE]
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engine cant cool down problem T T
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