TIMING CHAIN NIGHTMARE

[JAX01X5]

Finally had some time to get back on the "X". Heads are rebuilt and about 90% back together. Also changed the oil separator and the CCV which was completely blown apart and all the hoses to it were totally disintegrated . I have a few small vacuum hoses that I just can't figure out where they go.

Pic 1 is a hose that might be the trans vent but don't no where it hooks up
Pic 2 "A" is an empty vacuum connection on the back of the CCV
Pic 3 "B" no idea where it goes
Pic 4 "C" comes of the back of CCV but don't no where it goes

If anyone knows where these go I could use the help and I can finish the job and have it running Monday morning.

[JAX01X5]

update .....
"A" is suppose to be capped off.
"B" goes to "C"
Still need to know where the crank case vent hose goes and the "what I assume is the trans vent" goes..
By the way the Bentley service is completely useless when it comes to vacuum lines.

[diyanich]

Front differential and transmission vents stay the way you find them right now,leave them like that.

Originally Posted by JAX01X5

update .....
"A" is suppose to be capped off.
"B" goes to "C"
Still need to know where the crank case vent hose goes and the "what I assume is the trans vent" goes..
By the way the Bentley service is completely useless when it comes to vacuum lines.

[BimmerM3inGA]

Pic 1: Front differential vent. OK as is. Don't cap it off - it's a vent.
A: Plugs into B. You will need a piece of vacuum hose to connect (B) to (A). BTW, that black plastic canister in the photo for (B) is in the wrong place. It mounts further forward.
C: Off the top of my head, I believe that goes to a fitting that sits on top of Bank 1. If you can't figure it out, let me know. I'm going to be pulling the plastic engine cover off my 4.6 later today and can take a photo.

[JAX01X5]

Originally Posted by BimmerM3inGA

Pic 1: Front differential vent. OK as is. Don't cap it off - it's a vent.
A: Plugs into B. You will need a piece of vacuum hose to connect (B) to (A). BTW, that black plastic canister in the photo for (B) is in the wrong place. It mounts further forward.
C: Off the top of my head, I believe that goes to a fitting that sits on top of Bank 1. If you can't figure it out, let me know. I'm going to be pulling the plastic engine cover off my 4.6 later today and can take a photo.

Thanks "BimmerM3inGA" and "diyanich". BimmerM3inGA "C" will not reach the fitting on top of bank 1. If you could check it out when you take your cover and take a pic that would be great , just to be sure. The right hand fitting "A" on the back of my original CCV was plugged off , can you confirm that also please?

[JAX01X5]

I think the steel line for the oil separator that goes into block is gummed up on the lower half . I want to remove it from the block and clean it out but I'm not sure if it is above or below the oil level. Do you guys know?

[BimmerM3inGA]

I'm going to be hunting a vacuum leak on my 4.6 and will have the engine cover off. I'll take some photos and post later today.

I also just fixed a vacuum leak on my 740 (also an M62TÜ) and replaced both lines on the back of the CCV. Now that I think about it, maybe (C) goes to (B). And (A) goes to the fitting on the intake boot (near the throttle body). I'll double check and get back to you.

[BimmerM3inGA]

So it turns out that the 740 and X5 do not use the exact same vacuum hose setup:

On my X5, "A" is capped off.

"C" connects to "B".

And yes, the Bentley manual is useless when it comes to things like this.

The CCV is also a lot harder to access on the X5. There is more stuff in the way than with the 740.

[JAX01X5]

Thanks for all your help, I think I got it . Done for today, going to put the radiator, hoses etc..in tomorrow and fire it up around noon time. Can't wait , I haven't even heard it run yet, don't know what else I will find wrong but at least I know here won't be any engine trouble.

[BimmerM3inGA]

That first turn of the key is always a tense moment. But I'm sure it'll be fine with as much work as you've put into it! Good luck, and be sure to report back how it goes.