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HELP! Coolant leak
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I will look at a possible leak from the valley pan particularly when the leak is not obvious. This is common on 4.4 of that mileage.
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#3
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With the plastic cover removed from the engine, look with a flashlight at the back of the engine between the manifold and head. If it is the valley pan leaking, you should see either some coolant or signs of leaking. Anywhere on the cooling system that has what looks like corrosion buildup, like at the ends of the hoses, etc. would be a tiny leak, where the coolant is leaking soo slow it evaporates away before having a chance to drip.
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"When you do things right, people won't be sure you've done anything at all" (Bender, futurama) You make something idiotproof, they'll make a better idiot You think professional is expensive, just wait until you pay for amateur. Never let your sense of morals prevent you from doing what is right. Examine what is said, not who speaks. X5 pics RIP 4.6is..... 2003 4.6is |
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You can perform the pressure test yourself (just need the tools, obviously). I know AutoZone rents tools for free, but I'm not sure if they will have the pressure tester, or the specific adapter for your Expansion Tank. Give'em a call. As mentioned in a previous post, the Valley Pan is a very common culprit when it comes to coolant leaks. |
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__________________
"When you do things right, people won't be sure you've done anything at all" (Bender, futurama) You make something idiotproof, they'll make a better idiot You think professional is expensive, just wait until you pay for amateur. Never let your sense of morals prevent you from doing what is right. Examine what is said, not who speaks. X5 pics RIP 4.6is..... 2003 4.6is |
#8
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My money is on the valley pan gasket. As stated above, get all the hoses changed while completing this repair. If you are not under CPO, it's about a $1200.00 job ....Phil
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2011.5 Dinan ///M3: SSII DCT Competition Pkg Convenience Pkg Premium Pkg 2 Heated Seats Enhanced Premium Sound Black Kidney Grills BMW M Performance Steering Wheel BMW Carbon Fiber Performance Spoiler BMW Aluminum Pedals Dinan Exhaust Dinan Mid-Exhaust (x-pipe) Dinan Carbon Fiber Intake Dinan Performance Tune Dinan Pulley Kit Dinan CH-R Wheels Dinan Carbon Fiber Strut Tower Braces Arkym Front Lip Carbon Reflectors Lux H8 V3 Brembo 365mm BBK |
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I had this same problem a couple of months ago. Turns out the radiator had a pin size hole and the fan was spraying the coolant back to the manifold. Yours could be different though.
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2001 BMW X5 4.4i 2004 BMW R1200GS |
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