X5 diesel engine noise - With VID.

[Dr. Anthony]

Originally Posted by boredincl

Interesting, that does make sense. Was it the top turbo to manifold gasket or manifold to head gasket? i ask because i pulled my small turbo off today to send it to Tims Turbo (whom i believe rebuilt yours for Bohls, but i could be wrong, too many turbo conversations lately) and i noticed the bolts where not as tight as i expected them to be, not loose but easily broke free. i also notice there was soot under the gasket, which means a leak.
Thank you very much for the feedback!

Mine was right at the head. one of the studs had broken off. It was the one closest to the front of the motor. on the top right. I spent a lot of money trying to nail it down. Hope it helps!

[boredincl]

Originally Posted by Dr. Anthony

Mine was right at the head. one of the studs had broken off. It was the one closest to the front of the motor. on the top right. I spent a lot of money trying to nail it down. Hope it helps!

That helps a lot! thanks.

[Dr. Anthony]

Originally Posted by boredincl

That helps a lot! thanks.

Good luck! let me know how it goes.

[boredincl]

Originally Posted by Dr. Anthony

Good luck! let me know how it goes.

Will do.

[Tuesday]

I seem to have a leak.I see soot in picture that I'll post.It has a mild exhaust leak sound at speed.It might be hard to see,it's all around where that wire goes in.Any ideas?
https://postimg.org/image/s4hkivwnn/
My iPad doesn't post pictures on forums now for a few years.

[boredincl]

Originally Posted by Tuesday

I seem to have a leak.I see soot in picture that I'll post.It has a mild exhaust leak sound at speed.It might be hard to see,it's all around where that wire goes in.Any ideas?
https://postimg.org/image/s4hkivwnn/
My iPad doesn't post pictures on forums now for a few years.

That leak is from the bypass actuator rod due to the cast iron wearing with use. (they should have put a replaceable bushing in there). mine is doing that and the other used 35ds i have seen are also doing it. i have not heard if there is a fix for it other than replacing the turbo.

[Tuesday]

Thanks.Is that something that would be under warenty? I just looked and there is soot leak at bypass bushing.

[boredincl]

Originally Posted by Dr. Anthony

Good luck! let me know how it goes.

OK, So its resolved! well more or less.. With the small turbo off I was able to see the top stud on #1 cylinder was broken off! i spent the day yesterday drilling and tapping it (after buying a 90deg air drill small enough to get in there, nice drill bits and a set of easy-outs of course) once that was done i decided to check the bottom stud on #1 and when i tried to see if it was tight by applying maybe 5lbs of pressure it fell right out, broken off in the head. The top bolt pulled the manifold tight the head nicely and hopefully will do its job and keep it there so i don't have to replace the lower stud,
the noise is gone and it seams to have more boost since its not blowing out the manifold.
I bought this 09 X5 used and per the service records BMW was the only one working on it before i bought it with 74k miles. No mention of them working on or near the exhaust manifold other then replacing the DPF, EGR cooler and SCR which they don't need to remove the manifold for that so not sure if the studs just fatigued over time and snapped maybe due to the manifold twisting or such or that a mechanic took it off for some other reason and over torqued them.

Thanks again for the help!

[boredincl]

Originally Posted by Tuesday

Thanks.It that something that would be under warenty?

Not sure, I bought mine used with no warranty so i never checked.

[Tuesday]

It's great you guy have it all sorted now! I'm doing a 2 tank trip to a dealer I know will sort it out for me.Local shop straight ( doesn't want to mess with it) out doesn't see what's wrong.Says it's perfect .lol Thanks for your help !