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The BMW Range
5 Series
Topping Up Water Monthly?
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<blockquote data-quote="Vincent Hor" data-source="post: 83791" data-attributes="member: 1221"><p>The bleed screw is located at the thermostat housing. Loosen it using a spanner (6 or 8) until you see coolant flowing out. Top up the expansion tank and keep a watch at the flowing coolant. You will see bubbles. The system is completely bled when there are no more bubbles or when you see a constant flow of coolant.</p><p></p><p>Sometimes when you loosen the screw, there is no coolant flowing out. This is because the passage is blocked by rust stains. Use a rigid wire to clear the passage and the coolant will flow out.</p><p></p><p>This bleeding procedure is often overlooked by many including mechanics. Failure to do this procedure usually results in the engine running HOT.</p></blockquote><p></p>
[QUOTE="Vincent Hor, post: 83791, member: 1221"] The bleed screw is located at the thermostat housing. Loosen it using a spanner (6 or 8) until you see coolant flowing out. Top up the expansion tank and keep a watch at the flowing coolant. You will see bubbles. The system is completely bled when there are no more bubbles or when you see a constant flow of coolant. Sometimes when you loosen the screw, there is no coolant flowing out. This is because the passage is blocked by rust stains. Use a rigid wire to clear the passage and the coolant will flow out. This bleeding procedure is often overlooked by many including mechanics. Failure to do this procedure usually results in the engine running HOT. [/QUOTE]
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