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  #71  
Old 06-11-2019, 07:39 PM
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Quote:
Originally Posted by Purplefade View Post
...Is strange that they keyed nearly everything except the vanos, cps and O2 sensors, hmm, wonder if it was because there are 4 of each and they thought they'd really screw with us good when we finally needed to service those items...
Yes, I agree it is probably due to the parts themselves being identical / interchangeable. If they wanted to key things to distinguish left vs. right, they'd need to sell different parts for left and right sensors, and left and right cables, etc. And yes, they'd surely make us pay for the extra cost that comes with that at the cash register.
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  #72  
Old 06-12-2019, 02:28 AM
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Pull the fuel relay fuse and start the car it will suck the fuel pressure to near zero.
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  #73  
Old 10-02-2019, 02:22 PM
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Originally Posted by Purplefade View Post
I agree 100%

And yes, without the wiring issue pushing me to go back through my work that bill could have been much higher - had that call been “we need to time it”.

Sadly, I have messed with the Vanos solenoids on this thing so many times that area didn’t get pics... I thought to myself short pigtail to “Vanos 1” and long pigtail to “Vanos 2”... and that’s what I get for thinking vs just taking a pic of it
Dang! I didn’t take a picture either and now rough idle...so the short pigtail goes to farthest Vanos and the long pigtail loops back to the other one???
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  #74  
Old 10-02-2019, 03:32 PM
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In my case that was accurate - man I went through everything twice, some things three times and it ended up, thankfully, being swapped vanos plugs. It was literally as easy as swapping the plugs and everything was right with the world!



In this case, that picture would have probably saved me 20 additional hours of diagnostic work and trouble shooting - not to mention I wouldn't have had to pull the VCs again... Lived it and learned, I REALLY hope your issue is that straight forward.


Shoot me some history and I'll see if it rattles anything loose in my head
Sounds like you may have just finished a VSS job?
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  #75  
Old 10-03-2019, 11:56 AM
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Originally Posted by Purplefade View Post
In my case that was accurate - man I went through everything twice, some things three times and it ended up, thankfully, being swapped vanos plugs. It was literally as easy as swapping the plugs and everything was right with the world!



In this case, that picture would have probably saved me 20 additional hours of diagnostic work and trouble shooting - not to mention I wouldn't have had to pull the VCs again... Lived it and learned, I REALLY hope your issue is that straight forward.


Shoot me some history and I'll see if it rattles anything loose in my head
Sounds like you may have just finished a VSS job?

Yes, the valve stem seals was the primary objective as the rig was burning a quart of oil per 500 miles.
This thread helped me solve the puzzle yesterday! There was actually two issues causing the misfires.
1) driver’s side Vanos soleniods connections were mismatched. Lesson - mark them when disassemble and take many pictures This particularly important given two sides are connected differently which is counterintuitive. Passenger’s side has short tail going to the top Vanos and on driver’s side the short tail connects to the bottom Vanos. Btw, e53 n62 and e70 n62 Vanos harnesses look different, so it took me some time to dig them out online. And I did take pictures, but Vanoses were behind coolant hoses
2) once solenoids were connected properly, the misfires had improved, but were still there. Checked the codes with ISTA: misfires multiple cylinders and misfire cylinder #1
3) pulled out the coil from the cylinder #1 and noticed a drop of oil inside the connector. Cyl 1 spark plug was the first one put back in and it probably got a little bit of oil residue from contaminated spark plug socket; the old spark plug tubes were full of oil and the rubber insert of the spark plug socket got soaked in oil as a result. Cleaned everything real good and put back in. Engine started - engine light immediately off and no misfires, took the beast for a test drive around the block - acceleration strong, engine sound as supposed to be.
Lesson - a little bit of oil in the coil can cause misfires, so clean, degrease tools really well.
4) another lesson learned - when assembling the engine back together don’t try put everything for initial start ( brackets for coils, all plastic engine pieces, reinforcement bar, basically leave out anything that is not critical). Otherwise, if there are misfires, you will need to disassemble again to be able to reach coils, sensors, Vanos, etc. Mr Perfection learned it hard way:

After the repair, the engine seems pulling stronger. I think the difference is for cleaned injectors that were tripled cleaned with brake cleaner, seaform, and carb cleaner plus new micro filters. Changes in Oil consumption are yet to be observed/measured, but hopefully the erling new design seals will do their job! Would love to see 1 quart per 5000 miles for this 10 year old engine

Last edited by Anshev; 10-03-2019 at 12:17 PM.
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  #76  
Old 10-05-2019, 07:00 PM
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Super glad to hear you have her running again, that is awesome



I totally know the sinking feeling when you hit the key for the first time and she doesn't run and you "know" you checked everything twice something three times!

I did the same thing, took pics of the radiator hoses just splendidly, but not so much those blasted Vanos plugs and yes, it is TOTALLY counter-intuitive to make the plugs like that...


"After the repair, the engine seems to pull stronger" - I TOTALLY agree, I speculated that it was due to improved sealing of the engine and maybe better vacuum... but that's a total "SWAG". I also considered that fact that it got so many new parts during the process that it just cleaned it up and "woke" it up a little bit :-)


Glad to hear she's running, keep me posted on oil consumption, I can confirm that mine has dropped to nearly nothing, last oil change I was down less than a quarter quart in 3000 miles!!
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  #77  
Old 10-05-2019, 08:39 PM
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Same here - experienced much improved performance and dramatically reduced engine oil consumption. I check oil every weekend and it's always at the same level. Obviously the awful exhaust smell is gone.
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