X5 E53 found my vacuum leak

[jeffmiller]

+1 for Andrew's fix.

German Auto Solutions also has a DISA upgrade kit with Silicone, Viton, or Fluorosilicone O-rings. your choice. $70 - $80 depending on o-ring choice.

I, personally, prefer this well-documented kit (or Andrew's DIY solution).

https://germanautosolutions.com/stor...d-upgrade-kit/

[andrewwynn]

As @UAL noticed the flap is worn in this case definitely use one of the aluminum kits. Vs. the awr-fix repair in this case.

It is Faaaaar Superior to new. The original had several design flaws that don't exist in the repair kit.

My repair will get it operational while waiting on shipping though.

When I replace intake boot on M54 my go-to removal method is a razor blade. The factory installs the clamp from the bottom and it's nearly impossible to access unless you go THROUGH the boot.

I found out too late the knock off boot had rings on the outside but wasn't corrugated So I would not bend without kinking.

I already cut the old one in three pieces for removal so I used superglue to reassemble and if worked perfectly until the OEM replacement came (including the 3-4 tears in the small arm that was the reason for replacing in the first place.

[andrewwynn]

Originally Posted by upallnight

Me, I would go to a Pick N Pull and buy a Genuine BMW part for under $10.00

Except all the design defect parts are in any used one. Much better to use the aluminum flap repair kit than a mysterious miles used one.

If the flap was not worn I'd for sure do the 20¢ repair but that also required the pin to be in reasonable shape (but a little worn hole is accounted for in my fix).

[racebmwm3]

Ended up grabbing a new unit from BMA. The more I looked at the old unit, I could see how badly it was worn - worn enough that rebuilding it wasn't going to be worth it. My DISA has over 220k on it and it showed. When I compared against a new unit, I could see how badly it was worn. I'm surprised my X ran at all.

Also, replacing my DISA fixed another issue I had with stuttering on acceleration...it all makes sense now....
https://xoutpost.com/bmw-sav-forums/...eleration.html

[andrewwynn]

Good call yes that guy was extra worn. In my case the flap was pretty worn but the body was ok. In wife's case the flap was ok so it was a good candidate for the 20¢ fix.

[upallnight]

Originally Posted by racebmwm3

Ended up grabbing a new unit from BMA. The more I looked at the old unit, I could see how badly it was worn - worn enough that rebuilding it wasn't going to be worth it. My DISA has over 220k on it and it showed. When I compared against a new unit, I could see how badly it was worn. I'm surprised my X ran at all.

Also, replacing my DISA fixed another issue I had with stuttering on acceleration...it all makes sense now....
https://xoutpost.com/bmw-sav-forums/...eleration.html

Originally Posted by andrewwynn

Except all the design defect parts are in any Edited: new one. Much better to use the aluminum flap repair kit than a mysterious miles used one.

If the flap was not worn I'd for sure do the 20¢ repair but that also required the pin to be in reasonable shape (but a little worn hole is accounted for in my fix).

Like Andrew stated expect to have the problem show up again. Me I still would have gone to the Pick N Pull and bought a Genuine BMW DISA valve. If you have a decent Pick N Pull you can find several DISA valve and pick the best one for $10 bucks.

[racebmwm3]

Originally Posted by upallnight

Like Andrew stated expect to have the problem show up again. Me I still would have gone to the Pick N Pull and bought a Genuine BMW DISA valve. If you have a decent Pick N Pull you can find several DISA valve and pick the best one for $10 bucks.

I hear you. Only problem is there are no decent pick n pull places around here. Anything decent is far away. Time = $