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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > White smoke even after new wp/t-stat and new hose.

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      02-19-2016, 11:14 PM   #1
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White smoke even after new wp/t-stat and new hose.

As I was pulling into my garage, my coolant light came on, smoke was pouring out of my hood. Just yellow coolant light not the red symbol. Let it cool down for 4 hours. Added coolant, and it leaked straight to the garage floor.

Towed to local garage on Monday. They diagnosed, it was the hose. 1 week later and $200 lighter. Drove it home and when I pulled into the garage again, tons of smoke. But no warning lights. I had zero lights on the way home, wish I would've caught it sooner.

I just installed the waterpump/thermostat 3-4k miles ago (November)....from the same shop.

Smells like sweet celery as it did before.

After research - could it be the reservoir cap, not exhausting correctly? Is it possible that due to the lack of coolant burned up the thermostat and/or pump?

I'm so frustrated. Why didn't they drive it, or leave the car idle for a few minutes?

Would you tow it back to the same shop? Any thoughts on what it could be?
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      02-20-2016, 10:26 AM   #2
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Could just be all the spilled coolant burning off your engine from the leaking hose if all you did was drive it home from the shop but shouldn't be smoke. Could be same or different hose this time. Don't drive it until you know for sure. Tell shop about this. Look around and see if you see anything. It will take a couple days for smell to disappear. It's money well spent on a peake scan tool so you can diagnose fault codes a reader off the shelf can't read.

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      02-20-2016, 01:32 PM   #3

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Originally Posted by hankcah View Post
Drove it home and when I pulled into the garage again, tons of smoke.

Would you tow it back to the same shop? Any thoughts on what it could be?

Dude! . Lift yer bonnet; have a look!

Naturally your engine should be running and a flashlight's prob useful....now where's your leak?
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      02-22-2016, 10:02 AM   #4
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You should not have any smoke after leaving the shop. At a minimum the shop should run the car up to temperature to check for any leaks and to burn off any coolant they spilled and did not clean up.

Go back to the shop, but be cautious. It seems like they are not being thorough. Tell them your issues, ask them to make it right, be polite but firm.
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coolant, hose, smoke, thermostat, waterpump

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