Forum: X5 (E53) Forum
05-14-2026, 11:33 PM
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Replies: 12
Views: 7,882
Unfortunately changing IVM didn't help.
So I...
Unfortunately changing IVM didn't help.
So I replaced both vanos solenoids, and it seems to have cured the problem. It runs nice and even now!
Yeah I have no idea what happened, how it's possible...
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Forum: X5 (E53) Forum
05-14-2026, 07:00 PM
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Replies: 12
Views: 7,882
I'm doing a swap from M54 to N62 so a lot of...
I'm doing a swap from M54 to N62 so a lot of things are still disconnected.
But started the engine a few times while still working on the project, and it worked fine.
Then one of the starts it...
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Forum: X5 (E53) Forum
02-21-2026, 12:06 PM
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Replies: 14
Views: 1,728
Unfortunately N62s don't have the hex screw...
Unfortunately N62s don't have the hex screw adjusters at the back of the valvetronic motors.
But I guess once they're removed, there's no more pressure on the camshafts from the eccentric shaft.
...
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Forum: X5 (E53) Forum
02-20-2026, 02:41 PM
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Replies: 14
Views: 1,728
I have no doubt the leak is from the valves. ...
I have no doubt the leak is from the valves.
I'm trying to understand the valvetronic system but cannot find information.
It's possible I didn't time the engine properly. Because I tried doing a...
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Forum: X5 (E53) Forum
02-20-2026, 02:14 AM
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Replies: 14
Views: 1,728
Yeah the engine cranks.
I'm not sure what's...
Yeah the engine cranks.
I'm not sure what's going on. I timed it well, but something is wrong...
1-8 are cylinder numbers
With valvetronic motors installed:
1. 20 psi
2. 85 psi
3. 20 psi
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Forum: X5 (E53) Forum
02-17-2026, 05:16 PM
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Replies: 2
Views: 401
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Forum: X5 (E53) Forum
02-17-2026, 04:30 PM
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Replies: 14
Views: 1,728
Well sorry to revive and old thread but what...
Well sorry to revive and old thread but what results did you get?
I took my engine (N62B48) apart and did a bunch of things, replaced everything I could, did valve stem seals, timing chain, guides...
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Forum: X5 (E53) Forum
02-17-2026, 02:48 AM
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Replies: 98
Views: 97,764
Fuel filter pre vs post 2002/04
Based on my research, the fuel filters changed.
Pre 2002/04 had the longer version, with the pressure regulator on the outside of the filter. So the filter was longer.
On post 2002/04, the...
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Forum: X5 (E53) Forum
02-17-2026, 01:28 AM
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Replies: 78
Views: 20,079
Getting crank no start, sometimes starts for a...
Getting crank no start, sometimes starts for a few seconds and runs very rough.
I'm suspecting fuel issue, and possibly there's different fuel systems at play...return vs return less.
Might be...
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Forum: X5 (E53) Forum
02-16-2026, 08:41 PM
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Replies: 11
Views: 849
That's a very good question, and exactly...
That's a very good question, and exactly something that I'd be asking as well!
You see, I'm in the middle of a swap, from 2002 3.0 to 2005 4.8. Hell of a swap.
But basically I tried to keep parts...
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Forum: X5 (E53) Forum
02-16-2026, 02:43 AM
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Replies: 11
Views: 849
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Forum: X5 (E53) Forum
02-15-2026, 05:35 AM
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Replies: 11
Views: 849
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Forum: X5 (E53) Forum
02-14-2026, 02:20 AM
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Replies: 11
Views: 849
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Forum: X5 (E53) Forum
02-14-2026, 01:59 AM
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Replies: 11
Views: 849
A/C fan replacement 4.4, 4.8 complication
Has anyone replaced the A/C fan recently?
I'm completely stumped by it!
Part number 64546921381 shows it's compatible with all models and years, 3.0, 4.4, 4.6 and 4.8
So on my 4.8l I have an...
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Forum: X5 (E53) Forum
02-04-2026, 07:11 PM
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Replies: 78
Views: 20,079
Finally bolted the 215k large rear diff and...
Finally bolted the 215k large rear diff and filled with 75w140 lsd oil.
The half shafts were of course different, they were larger diameter. The flanges were also larger.
Good thing I saved 4.8...
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Forum: X5 (E53) Forum
01-31-2026, 04:10 AM
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Replies: 5
Views: 564
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Forum: X5 (E53) Forum
01-29-2026, 11:20 PM
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Replies: 5
Views: 564
Not that's not a nut, it doesn't come apart...
Not that's not a nut, it doesn't come apart there.
This is how it comes out.
https://i.ibb.co/GvQXmsDW/s-l1600-459.jpg (https://ibb.co/fYdbJ8Wk)
Up and down on the column stopped working. Can...
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Forum: X5 (E53) Forum
01-29-2026, 03:06 PM
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Replies: 3
Views: 373
Photo repository idea
I'm not sure if this already exists, or if someone else had thought about it before.
But what it we created a catalog of every picture of every nut and bolt and wire of the X5?
I feel like we have...
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Forum: X5 (E53) Forum
01-29-2026, 02:56 PM
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Replies: 5
Views: 1,486
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Forum: X5 (E53) Forum
01-29-2026, 02:48 PM
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Replies: 78
Views: 20,079
As with any project that's been going for too...
As with any project that's been going for too long, you start forgetting everything.
When I took things apart, I thought I had taken enough pictures, but when putting things together, it's never...
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Forum: X5 (E53) Forum
01-29-2026, 03:10 AM
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Replies: 5
Views: 3,180
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Forum: X5 (E53) Forum
01-29-2026, 12:54 AM
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Replies: 78
Views: 20,079
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Forum: X5 (E53) Forum
12-31-2025, 01:20 AM
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Replies: 78
Views: 20,079
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Forum: X5 (E53) Forum
12-06-2025, 12:11 PM
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Replies: 78
Views: 20,079
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Forum: X5 (E53) Forum
12-04-2025, 10:06 AM
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Replies: 78
Views: 20,079
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