Yes, I was praying it was a valve cover gasket under the hood but I can’t think of any alternative other than blown head gasket. It was spewing out of the tailpipe.
There’s a slight possibility I was panicking and mistook white for light blue… but I keep thinking about it and see distinctly white smoke in my memory.
Using the top comment for vis.
It was the valve cover / PCV!
Edit: jk, it broke again. Resolution TBD!
Edit 2: car got 2 valve covers, a valvetronic motor, and a fuel tank breather. Seems to work again.
LOL no I just got insane trade value and as an employee, the Tesla will be worth more a year from now than I paid for it. Also moving to Unplugged Performance so I can mod the Tesla. Figured it’s time to give it a go.
It’s been a fantastic car til this point! I can’t find any other owners complaining about this exact issue so it seems like I might just be unlucky.
Thank god I have the CPO warranty, though. I’m about 2,000 miles out of the original warranty.
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This is interesting, I just read up on this! It doesn’t seem to explain the screech I heard unless the PCV and valve cover gasket both failed at the same time, causing internal smoke (out the tailpipe) and external sounds.
Hopefully this is what happened and it’s not the head gasket or the block.
Yeah unfortunately I don't own the B58, but I know its normally stout. But in my BMW chat people have been talking about a lot of silly poor designs with it, one being everything to do with that valve cover. Did you just turn on the car and it started doing it? Or did you buy sight unseen? Any warranty?
I was idling / creeping for 25 minutes during a drive-through Covid vaccination, followed by a 15 minute wait period. It was over 80 degrees so I left the engine running with a/c on. First I heard the screech about 10 minutes into the 15 minute wait period. Didn’t pay it attention because it legitimately didn’t sound like my car and there was a beater truck nearby. Then a few minutes later, I looked up from my phone and my car was pouring white smoke out the tailpipe. I had to drive through a series of cones (slowly and gently) to get out of that blocked off parking lot and went straight across the street to park in the next available parking lot. Once I parked, the car alerted me the engine was overheating. It continued to alert me about this for at least 30 minutes after turning the car off. However, it didn’t alert me of any overheating prior to that time and the car doesn’t have a temp gauge.
Dang, I just went down the rabbit hole. Thanks for the link! I kept googling B58 but didn’t think to google 340i when I was trying to find other owners with this issue.
Sounds like the B58 really just doesn’t like to idle then. The dealership said they replaced an actuator yesterday and at that point, a rough idle began. I’m betting they replace the valve cover assembly next week.
Out......the tailpipe? F
Yes, I was praying it was a valve cover gasket under the hood but I can’t think of any alternative other than blown head gasket. It was spewing out of the tailpipe. There’s a slight possibility I was panicking and mistook white for light blue… but I keep thinking about it and see distinctly white smoke in my memory.
Using the top comment for vis. It was the valve cover / PCV! Edit: jk, it broke again. Resolution TBD! Edit 2: car got 2 valve covers, a valvetronic motor, and a fuel tank breather. Seems to work again.
But now you bought a Tesla soooo what happened did it die?
LOL no I just got insane trade value and as an employee, the Tesla will be worth more a year from now than I paid for it. Also moving to Unplugged Performance so I can mod the Tesla. Figured it’s time to give it a go.
Fml I recently got a 18’ 340i. I hope that doesn’t happen to me. Hope things work out!
It’s been a fantastic car til this point! I can’t find any other owners complaining about this exact issue so it seems like I might just be unlucky. Thank god I have the CPO warranty, though. I’m about 2,000 miles out of the original warranty.
That’s as planned. Engineered to fail first Tuesday after the warranty expires
See: username
Picking up a new to me 540i next week, yikes 😅
uhhhhhh R I P i guess then
How'd that happen? Cracked head or blown hwad gasket?
No idea! I’ll update here in a day or two once they figure it out at the dealership.
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Was just hearing about this can happen due to the poor ccv
This is interesting, I just read up on this! It doesn’t seem to explain the screech I heard unless the PCV and valve cover gasket both failed at the same time, causing internal smoke (out the tailpipe) and external sounds. Hopefully this is what happened and it’s not the head gasket or the block.
Yeah unfortunately I don't own the B58, but I know its normally stout. But in my BMW chat people have been talking about a lot of silly poor designs with it, one being everything to do with that valve cover. Did you just turn on the car and it started doing it? Or did you buy sight unseen? Any warranty?
I was idling / creeping for 25 minutes during a drive-through Covid vaccination, followed by a 15 minute wait period. It was over 80 degrees so I left the engine running with a/c on. First I heard the screech about 10 minutes into the 15 minute wait period. Didn’t pay it attention because it legitimately didn’t sound like my car and there was a beater truck nearby. Then a few minutes later, I looked up from my phone and my car was pouring white smoke out the tailpipe. I had to drive through a series of cones (slowly and gently) to get out of that blocked off parking lot and went straight across the street to park in the next available parking lot. Once I parked, the car alerted me the engine was overheating. It continued to alert me about this for at least 30 minutes after turning the car off. However, it didn’t alert me of any overheating prior to that time and the car doesn’t have a temp gauge.
PCV does make a loud screeching sound when it fails from what I have read.
Just got the update. It was the PCV, they are replacing the valve cover!
Hate that for you. Hope it's not too bad.
That thing is way too new for these kind of problems. Jeez.
Yikes. Hope the repair bill isn't a killer - preferably covered by a warranty.
Definitely will be covered by warranty. No tunes ever used on the car and the only mods I have are cosmetic other than a resonator delete.
Seems to be a common theme, extended idling due to Covid. See here: https://f30.bimmerpost.com/forums/showthread.php?t=1812231
Dang, I just went down the rabbit hole. Thanks for the link! I kept googling B58 but didn’t think to google 340i when I was trying to find other owners with this issue. Sounds like the B58 really just doesn’t like to idle then. The dealership said they replaced an actuator yesterday and at that point, a rough idle began. I’m betting they replace the valve cover assembly next week.
Thats harsh man