08-26-2019, 10:42 AM | #1 |
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X6m blowing smoke on boost
Got a 2011 X6m with the S63, catless DPs and a tune. She burns a bit of oil, 1qt every 2k miles or so. No puffs on startup usually and I only really notice the exhaust tips getting dirty and a light oil burn smell from the exhaust.
I can't see any smoke at idle or normal driving. Even on boost I dont see anything in the rear view. However, a motorcyclist (on a BMW no less) caught up with me and let me know I had shot out a decent plume when I got on it. From what I understand the S63 doesn't generally have valve seal issues and would more likely be the turbo seals. She runs perfectly otherwise. Curious what others with this motor have run into and what my options might be. I dont really want to sink upgrade money into the aging car. Does anyone know if rebuilt turbo cartridges are available? |
08-26-2019, 11:28 AM | #2 | |
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From what I've seen valve seal issues are a relatively common problem with the S63s. Are you seeing any lighter colored smoke when you accelerate after the vehicle has idled for a minute or two? As for turbo rebuilds, I just had mine rebuilt by Turbo Lab of America for $650/each. I have yet to put them back in as my engine is also getting rebuilt by Ghassan after a rod bearing failure.
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08-26-2019, 12:49 PM | #3 | |
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112,000 miles. I dont see any smoke at all at idle. I can smell the oil being burned but dont really see anything coming out of the tail pipe. Even the build up on the tail pipes isn't bad, just noticeable. Not enough to even stick to the bumper. $650 is pretty good. About how long did it take them? |
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08-26-2019, 12:56 PM | #4 | |
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I'm still waiting to get the turbos back, they've had them for a week and told me the turn around time would be 2 weeks.
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08-26-2019, 01:17 PM | #5 |
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Peter, I can't tell from your post if you are doing the valve stem seal idle test correctly. Its not during idle that you would ever see smoke, its after idling for a good 4-5 mins, then stomp on it. The oil accumulates during idle and then gets burned under accel.
Just checking. Look for other post on here somewhere by Sophisticated Redneck, I think he also advised someone to check their turbo return lines to see if they are clogged (check for yourself, I don't know that I understand it 100%).
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08-26-2019, 01:28 PM | #6 | |
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Here's a link: https://topclassactions.com/lawsuit-...on-settlement/ |
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08-26-2019, 01:37 PM | #7 |
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I correct myself as the S63 motor did come in the M and the N63's were solely in the 50i. However, the S63 doesn't have the same valve seal issues as that was definitely the N63. Check your turbo lines as they can get gunked up and cause excessive oil consumption.
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08-26-2019, 02:24 PM | #8 |
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As posted above, let it sit 5 minutes then give some gas, if it were the valve stem seals, you will know. Sounds to me that your oil return lines are clogged.
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08-26-2019, 03:02 PM | #9 |
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It’s not uncommon for vehicle to dump fuel during pedal to the metal environment. Rich fuel will create some black smoke. A bystander will see smoke as just smoke. A person that knows about engine can distinguish different color smoke. Oil burnt smoke will create a longer lasting smoke that you can be able to see behind your mirrors as they are brighter(bluish)than rich fuel(darker soot)smoke.
Like others have said , do the idle test for your valve seals. S63 runs much cooler than n63. Oil temperature hovers around less than 210 vs 250 range in the n63. |
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08-26-2019, 03:23 PM | #10 | |
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Ill try to get to the idle test later today. Hopefully its just the return line being a punk. That would be nice |
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08-26-2019, 04:34 PM | #11 |
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As others mentioned could be oil return lines getting clogged but another failure point is the two way check valves that blocks boost from hitting the crankcase. If these fail, your crankcase will become pressurized and can cause smoking under prolonged periods of boost. Easiest way to check is to buyan extra oil cap, pickup a boost/vac gauge, drill a small hole in th cap and run the line/sender to it. Then drive it and see what it does..or just replace all the ccv lines that contain the check valves and see if it makes a difference
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08-26-2019, 05:43 PM | #12 | |
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Fortunately I just replaced all the CCV lines. Wasn't planning on it but they fell apart when I replaced the plugs. Did the valve seal test. Idled for a couple minutes and goosed it from a standstill. Nice light blue plume hovered where I was once parked. Nothing else tho and it didn't last any longer than the moment. What is the behavior for a clogged oil line? |
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08-26-2019, 05:48 PM | #13 |
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did he say what color was the smoke?
since you dont have cats some smoke should be normal as long as its not white..
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08-26-2019, 06:43 PM | #14 | |
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08-26-2019, 06:48 PM | #15 | |
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I think at this point Im trying to figure out if its something to worry about or not. Doesn't sound like turbo seals or clogged lines. Its not really burning that much oil. Another point of mention, only the outer exhaust tip gets noticeably dirty. |
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09-20-2020, 05:28 AM | #16 |
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So if your turbo feed lines are clogged, what do you do? remove them and clean them during an oil change? I will be installing my DP's soon and if need be i wouldnt mind doing this then.
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09-20-2020, 05:37 AM | #17 |
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I recommend you just replace them. Cleaning them takes hours due to how they are designed and you can never get them 100 percent. They are not to pricey if memory serves, around 80 dollars each.
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09-20-2020, 05:45 AM | #18 | |
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https://www.realoem.com/bmw/enUS/sho...diagId=11_4386 Are we talking about replacing 5, 6 and 7 in the above diagram?
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09-20-2020, 07:35 AM | #19 | |
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Since your in Bahrain, your temps are alot like here in Arizona and probably is a good idea to replace them all (I replaced everything too). Not to many places in the world like where we live subjects these twin turbo engines to 118+ temps. The design was border line before but toss in some extreme ambient temps and stop & go traffic and it's enough to wear everything out that much faster and boil the oil in the return lines. I added some extra heat sheilding to mine you might want to do too. Last edited by Sophisticated Redneck; 09-20-2020 at 07:45 AM.. |
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09-20-2020, 07:43 AM | #20 | |
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09-20-2020, 07:58 AM | #21 |
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Ya grab all four and since your in there, grab the oil return cover (#13) they connect to. It's not to expensive and will take only minutes to change when you have everything already out and they tend to start leaking around 80-100k
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09-20-2020, 08:02 AM | #22 | |
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