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#1
05-14-2018, 11:28 PM
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4.8l e70 small amount of coolant on the ground when backing out the garage
Twice as I backed out of my garage and saw a small trail of coolant on the ground. Looked under the car but it’s no longer leaking, but there’s a drop hanging from underneath the cover on the passenger side, which is where it came from. Then I take it out for a good drive and it doesn’t leak anymore. Any ideas?
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#3
05-15-2018, 01:08 PM
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Probably need to take all the lower pans off, rinse everything off with water and then take it for a drive then inspect. Be careful though, I did this exact thing and wiggled a hose and a plastic fitting crumbled and it sprayed hot coolant everywhere. Luckily I didn't get burned too badly.
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#4
05-16-2018, 09:14 AM
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So this might be a silly suggestion....are you sure it's coolant? I've noticed our E70 really dumps out condensation from the AC. If it's soon after we drove it we'll notice the puddle under the car, and next morning it's common to see trails of drips down the driveway as we back out. Really stressed me out first time I saw it as I just assumed it was coolant.
__________________
'08 X5 4.8i - 196k '15 i3 REX - 95k - Blown AC compressor '98 323is - 170k - Garaged '94 325i - 208k - Sold
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#5
05-16-2018, 09:49 AM
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Quote:
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#6
05-16-2018, 11:49 AM
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Quote:
And good point by nanniepoo, but. O, it’s deffinitely blue antifreeze.
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#7
05-16-2018, 11:54 AM
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I’m jus wondering, other than the valley pan, could there be a coolant connection somewhere around the right side of the engine that’s causing the leak. I was working down there a month ago while replacing the alternator.
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#8
05-16-2018, 12:07 PM
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Being a 4.8 it could be the internal coolant tube too. Leaks out a weep hole in front of the engine then down. When it first starts happening, no idea until low coolant warning. Then gets progressively worse until you finally see a drop on the ground on the passenger side of the car.
__________________
'01 740i Sport MKIV, Quad Brake Lights, Bi-Xenon retrofit, HID Fogs Dinan 7 Struts, Springs, camber plates, Intake, MAF, CAI, Throttle Body, NBT Retrofit, Strong Strut  '99 318ti Titanium Silver; '97 318ti Boston Green; '13 X5 3.5i Saphire Black Metallic '84 633csi Black (sold); '88 325iC Black (sold); '97 740iL Black(sold); '01 740iS Black (sold);'97 318ti White (sold); '08 X5 4.8i Titanium Silver (sold); '96 318ti Alaska Blue (sold)
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#9
05-16-2018, 12:48 PM
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#10
05-16-2018, 01:02 PM
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Yes, it is but you can't tell it's leaking by looking at it there. The vulcanized o-ring attached to the OE tube starts coming off and that is what causes the leak.
Being that the tube is 1 piece you need to cut it out. Then use an expandable replacement like the one from All German Auto in Escondido, CA. That's what I installed and not an issue since. A bit of work but not too drastic. They even have a good video and instructions on their site. 11-14-1-439-975 BMW N62 Coolant Pipe | AGA Tools
__________________
'01 740i Sport MKIV, Quad Brake Lights, Bi-Xenon retrofit, HID Fogs Dinan 7 Struts, Springs, camber plates, Intake, MAF, CAI, Throttle Body, NBT Retrofit, Strong Strut '99 318ti Titanium Silver; '97 318ti Boston Green; '13 X5 3.5i Saphire Black Metallic '84 633csi Black (sold); '88 325iC Black (sold); '97 740iL Black(sold); '01 740iS Black (sold);'97 318ti White (sold); '08 X5 4.8i Titanium Silver (sold); '96 318ti Alaska Blue (sold)
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