BMW E70 X5M - Symptoms/Causes of Common Blue Smoke Issue | 4K

Short overview of what causes blue smoke and the symptoms.

[@jonhall3500]

Thanks for the run down. I have a bit of a smoky exhaust after about half an hour in traffic only. The right exhaust only. I recently change turbos and manifolds to F10 and machined the inlets to fit OEM fittings. Lots more midrange and sounds better. The smoke I am checking and thinking its either turbo start of problems or PCV valve. Now after watching your video I will check every vacuum line again just in case. Thanks.

[@hyu-fs2kx]

i got e70 4.8i in china,your video is good

[@tony8826]

My E71 X6M was smoking a bit before, just got the turbos replaced and its smoking like crazy now :(

[@SLTravel11]

what about the oil separator under the valve cover. only one side of my tubes to catch can is soaked with oil weird.

[@E70MGarage]

It's very uncommon for them to fail, and having only one side be collecting is normal - its because of how the PCV system is setup, there's a cross-over on Bank 2, that's why it catches the most.

[@joniceranola]

Hey, thanks for the vids. I also installed catch cans on my E70 X5M. 5k miles after, I checked the cans and only bank 2 has some junk in it, about 1/4 full. Bank 1 is dry. Could this be normal? thanks for your input. Keep the vids coming.

[@E70MGarage]

Hey, yes - that's completely normal. It's because bank 1 and bank 2 intake manifold lines connect to bank 2, so that's where it catches most of moisture and gunk.

[@joniceranola]

@@E70MGarage thanks, for a while i thought I did it wrong. 😁

[@Dilberto88]

Can bad index 11 injectors wash down cylinder walls and dilute the oil in the sump? I know fuel inside oil is highly volatile.

[@E70MGarage]

If they're bad and leaking, absolutely - they can kill your engine. Fuel does make its way to the oil over a period, hence the shorter oil change intervals, the better it is for the engine.

[@gcygeo2040]

So to be specific, with my x5 when its idling or driving in very low speed blue smoke comes out however if I pick up speed the blue smoke stops. Can u please give advice

[@E70MGarage]

Either the PCV system or vacuum leaks, BMW engines are very finicky when it comes to vacuum or crankcase pressure. 1. Inspect your PCV lines, they tend to become brittle due to heat cycles and break, if PCV lines are good. 2. Check PCV checkvalves - they tend to fail and lock in either open or closed position, you can clean them w/ brake clean, if that works it might save you $500 on PCV system. 3. Do a smoke test for vacuum leaks.

[@gcygeo2040]

Thanks. I will do dat and update u in 3 weeks time. Do u have a group chat platform where we reach u

[@Ov32002]

We’re you getting any codes?

[@E70MGarage]

PCV leaks throw an engine malfunction code (310B - Boost leak), which is when PCV lines are broken. In my case and most cases, there are no codes, but you can tell by how smooth the engine idles, etc.

[@Ov32002]

@@E70MGarage ahh gotcha

[@mohammadbinwaseem2843]

Toyota minivan also smoking. Could you make vids on that too?

[@lord-lh8ed]

Hi there brother how do I get in contact with you on Instagram... I'VE got a x5m I'm only 21 and brother I had a issue of transfer case they charged me like $2500 they ripped me off nw the I have same setup as u supremo n stage 2 now they car is smoking I think it's the pcv because the car has power Vacum lines and all are all good but I need to contact you

[@E70MGarage]

Hey, shoot me a DM on @mean_x5