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#1
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Disappearing coolant?
Going to pick up some coolant today and top it off. I'll admit I hadn't checked in a while. Thinking to get a 1.2 bar cap. Any thoughts?
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Motivation can change what you do, but inspiration can change who you are. --------------------------------------------------------- 2003 BMW X5 3.0i, Black Sapphire, 287,423 km and kicking! www.sam-medina.com My online graphic novel: |
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#2
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1.2 bar cap is a good idea in any case. Perhaps the person who changed rad, sensors, tank might not have followed the heater bleed procedure to ensure the system is properly filled and mostly de-aerated?
Set heat to max temp, run car to normal operating temp then run car for 5-10 minutes (run inside blower to a normal speed). Then shut car off, de-pressurize system and top up as required. It might be that simple. IF NOT: Easy way to check many common leaks is to use a cooling system pressure tester - it installs where the pressure cap would be. You pump up the system (engine off) and you watch the gauge to see how it holds pressure (normal case) or where you have a visible or audible leak (typical). Head gasket leaks may not always be shown here - there is a test fluid you can buy to detect combustion gas in coolant.
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2002 Euro X5 (E53) 3.0 diesel (M57) 5 speed manual with UUC short shifter. Pre-xDrive NV125 transfer case (chain & gears). Factory Xenon headlights, Spyder LED tail lights Updated vortex crankcase breather. Motorsport dead pedal, factory fire extinguisher, factory first aid kit, factory F&R mud flaps, factory PDC Bilstein B6 shocks F&R Redline oil has replaced "lifetime" fluids (F&R diff, manual transmission, transfer case and P/S). Dimple magnetic drain plugs in all compartments. |
#3
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1.2 bar cap from GAS ($30) or 1.4 bar factory cap from E30 ($15) both would suit you fine.
I hadn't checked mine in a while either and was about 8 oz from full mark, just poured a few oz of distilled water and its been fine since then.
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#4
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Thanks guys! Going to hunt down that e30 cap this week. Exhaust doesn't smell like coolant, but will see about testing for a head gasket leak. Might not have been bled properly when the new waterpump was put in, either. I knew I should have checked. :P
__________________
Motivation can change what you do, but inspiration can change who you are. --------------------------------------------------------- 2003 BMW X5 3.0i, Black Sapphire, 287,423 km and kicking! www.sam-medina.com My online graphic novel: |
#5
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No light, just had an urge to check. Sensor was replaced last december w/the tank
__________________
Motivation can change what you do, but inspiration can change who you are. --------------------------------------------------------- 2003 BMW X5 3.0i, Black Sapphire, 287,423 km and kicking! www.sam-medina.com My online graphic novel: |
#6
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How far down was the indicator/float/needle from the top of the reservoir's opening ?
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#7
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Sitting at the bottom.
__________________
Motivation can change what you do, but inspiration can change who you are. --------------------------------------------------------- 2003 BMW X5 3.0i, Black Sapphire, 287,423 km and kicking! www.sam-medina.com My online graphic novel: |
#8
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As with all BMWs...check the usual coolant system components that fail. I had an elusive check coolant warning on my e38 for a good 6-9 months (don't drive it much). I kept an eye out for dried white coolant spatter and/or residue that may have been flung from the spinning fan or at hose couplings...and never could find anything...but kept getting the warning.
Then during a front brake pad job the culprit finally showed a tell tale sign...there was a small leak from the underside of the water pump..
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#9
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Thanks, will be looking. Tank/sensor replaced in December, rad hoses and temp sensor in march/april, water pump was replaced in June. No drips thus far. Just topped it off, got it sitting on the uphill driveway, will bleed once the engine cools a bit.
__________________
Motivation can change what you do, but inspiration can change who you are. --------------------------------------------------------- 2003 BMW X5 3.0i, Black Sapphire, 287,423 km and kicking! www.sam-medina.com My online graphic novel: |
#10
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Did the bleed, will check on it again... I suspect my cousin didn't bother to top off after he changed the water pump, so between that and the BMW coolant hunger, I was down about 3 quarts. :P
__________________
Motivation can change what you do, but inspiration can change who you are. --------------------------------------------------------- 2003 BMW X5 3.0i, Black Sapphire, 287,423 km and kicking! www.sam-medina.com My online graphic novel: |
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coolant, coolant leak, radiator, wtf |
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