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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 02-08-2016, 04:11 PM
rmoszko0 rmoszko0 is offline
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Mein Auto: 2008 BMW 335xi coupe
Misfiring, thick white smoke, engine cuts out

So I have a problem...and its a package of things that start to happen all together. And every time it starts the happen is when it was parked outside when it was very cold. The engine misfires, thick white smoke instantly, engine cuts out, gas is flying through. So the first time it happened went to the dealership and they said it was the fuel injectors. So i took it to the shop and got that cleaned up, new injectors and new plugs. Everything was great and running. Than 2-3 weeks later it started to happen again after it was outside in the cold for a few hours and turned the car one and was like wtf. Took it in again and they said the catalytic converter was clogged so they cleaned it up and everything was running great until today when i finished class and went to start it up. Instantly misfiring, gas gauge dropping, thick white smoke, engine was cutting out. I called and they said that the other converter might be clogged and that they didn't clean it out. Told me to bring it in tomorrow morning to read the codes. But is it possible that its bad converters or is there more to the story?
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Old 02-08-2016, 08:13 PM
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08 335Ci 08 335Ci is offline
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What weight oil are you using? If you're using 5W-40, 10W-40 instead of the 5W-30 BMW recommends, it could be screwing with your VANOS.

If you're close to an oil change, try the lighter weight oil.
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Old 02-08-2016, 10:52 PM
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CALWATERBOY DUE CALWATERBOY DUE is offline
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Quote:
Originally Posted by rmoszko0 View Post
So I have a problem...and its a package of things that start to happen all together. And every time it starts the happen is when it was parked outside when it was very cold. The engine misfires, thick white smoke instantly....

Well that does seem to be a valid issue. Your code readout is important - post here! And let's check your head gasket: [click me]
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Old 02-11-2016, 07:56 PM
rmoszko0 rmoszko0 is offline
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I use the recommended oil always and this started to happen before my oil change the first time. So the head gasket is not damaged so thats not it. And the converters are clogged up. Are there any aftermarket converters you guys would recommend for me to use? Because BMW converters are well you know a bit pricy lol
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Old 02-11-2016, 08:06 PM
Robin128 Robin128 is offline
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That sounds remarkably like head gasket blown.

Is there a milky gunky deposit under the oil filler cap?

Is your coolant dropping?

Immediate oil change and filter to examine old oil.

Codes!
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Old 02-11-2016, 08:23 PM
rmoszko0 rmoszko0 is offline
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No milky gunk under the filler. And no my coolant hasn't been dropping. Ive kept my eye out for those two things but nope.
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