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Camshaft Bearing Ledge failure - Who's had this?
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08-28-2016, 09:42 AM | #1 |
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Camshaft Bearing Ledge failure - Who's had this?
Like the title states, I'm looking for some folks that have dealt with this.
I took a ride last weekend and out of nowhere after a 3rd gear pull, the car threw a litany of codes; 2a87, 2a98, 2a99, a couple other Vanos codes .... mutliple cylinder misfires (every cylinder), knock detection cylinder 2 .... some others that are escaping me right now and I dont have the list in front of me. Those were the pertinent ones. Immediately pulled over on the highway and turned off car. Tried clearing codes and restarting and the car clearly wasn't right. It stalled, and I got a tow home from that point. From the limited amount of material I found to research i'm nearly convinced the bearing ledges are scored, and that cam timing jumped. I'm gearing up to move the car to our garage to start opening up the valve cover and seeing whats going on. My question is, for those of you have dealt with problem, how did you attack it?? ANY info before I start tearing her down would help. Thanks guys. *Edit* should also mention I cleaned both Vanos Solenoids, which were dirty. On restart the idle calmed down to normal for about 3 minutes before shit hit the fan again and went back to sounding like and idling like dogshit. Last edited by Sean978; 08-28-2016 at 09:45 AM.. Reason: Vanos. |
08-28-2016, 10:10 AM | #2 |
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Is your car an M3 ? I haven't heard many n54 s with bearing ledge failure,
do you have meth? What were you IAT s if you were logging ? |
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08-28-2016, 11:04 AM | #3 |
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The bearing ledge is a known issue that can happen, though not often. Someone also wrote a diy on here.
Why not start by replacing both your solenoids and clearing adaptations before considering the most extreme possibility?
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08-28-2016, 11:58 AM | #5 | ||
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The last time I started the car, after the vanos solenoids were cleaned, there was a distinct metal on metal sound and awful noise coming from the exhaust side of the valve cover. |
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08-28-2016, 01:39 PM | #6 | |||
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08-28-2016, 06:10 PM | #7 | |
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08-28-2016, 07:45 PM | #8 |
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From what I have read, cleaning the vanos solenoids has had very limited success and usually does not solve any issues for very long. I would probably do new solenoids at that mileage anyway and go from there
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08-28-2016, 09:42 PM | #9 | |||
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08-28-2016, 10:35 PM | #10 |
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Drives: 135i M-Sport
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I had this issue on my old e92 335i (2007) - $2k repair I believe. (Covered by third party warranty)
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08-29-2016, 01:16 PM | #11 | |
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I might be an exception but I got my car at 50k and it would throw vanos cels whenever I would punch it. I cleaned then swapped intake and exhaust and now Im sitting at 148k miles without throwing another code. Ledges are fine too. |
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08-29-2016, 03:04 PM | #13 |
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I just had one X5 3.5i with the same issue. Run ATF with the engine oil, clean vanos solenoids, clean vanos check valves, clean crank possion sensors, Rotella T6 and see... It worked for the X5
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08-29-2016, 06:45 PM | #14 |
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Bearing ledges replaced on my car twice under warranty.
With the previous owner at about 30K miles. With me, it was done at about 95K miles when I was having rough running and the dealer rebuilt the head on my car including cam ledges.
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08-29-2016, 08:00 PM | #15 |
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08-29-2016, 10:34 PM | #16 |
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It's good "detergent" because is thin. Could be also used in the fuel but not good for catalyst converters. It will clean and lubricate the lines and injectors, especially in diesel engines. In the engine head it will clean and lubricate the valve lifters. I used 1q in 7q engine. Ran it for about 30-45min for the engine for get hot. If there isn't any or much matal shavings on the vanos check valves screen probably is not camshaft ledges. Oil quality and oil flow is huge factor in these engines throwing vanos codes or not. Some say it wouldn't make difference and could harm the engine but I have seen it work. For a DIY-er is $50 for some ATF and good diesel engine oil due to higher detergent quilities built into it. Is definitely a worth of try.
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08-29-2016, 11:45 PM | #17 | |
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TBH I'm dubious I know I wouldnt run it in my N54 There a lot of conjecture on this thread on the use of ATF as a engine flush: http://www.bobistheoilguy.com/forums...opics/263558/3 |
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