M5 F10 smoke coming out of Exhaust

[Rabil]

Hi everyone,
I’ve noticed that when I cold start my car, there’s smoke coming out of the exhaust that smells like gasoline. Can also see the smoke when stopped at traffic lights. researching, I found that it could be due to the valve stem seals, PCV tube, or even the head gasket.

When I checked the PCV valve hose, this is what it looked like []. I’ve already bought a replacement part from a helpful chap in this group.

Do you think replacing this will solve the smoke issue? Or should I be looking into something else? Any advice would be appreciated. Thanks!

[M5Rick]

You can only put some more miles down and go from there if more needs to be done on it, that you can smell gas could mean a failing injector but i'm only speculating.
What's the mileage and year of it.

[Rabil]

2013 and 99k mileage

Injector, spark plugs and Rod bearings replaced last week

[M5Rick]

My next chain of thought is if smoke out of exhaust and fuel smell may then mean a turbo seal is gone. Check if seperate intercooler reservoir level is fine to cool the turbos after engine is switched off, the small motor should click in to run coolant through the turbos. What oil and grade do you use..

[Rabil]

Is that the coolant reservoir?

I use 5w 40

[M5Rick]

No, it's the small one near the oil cap.

[KurtsM5]

If the shop didn't recommend replacing that PCV hose, you need to find a better shop.

[M5Rick]

That blocked PCV looks like it couldn't be resurrected lol