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Thread: Bad idle after oil change

  1. #26
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    It was probably just burnoff from what you spilled. All is well. Carry on.

    by Dane Wilson, on Flickr

  2. #27
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    white smoke is not oil related, bluest smoke is oil.
    Tom D

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  3. #28
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    Quote Originally Posted by Tom D View Post
    white smoke is not oil related, bluest smoke is oil.
    Agree....but he said it happened right after an oil change where he spilled oil...and now the problem has subsided...so....idk.

    by Dane Wilson, on Flickr

  4. #29
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    just clearing up the color issue so that someone who reads this doesn't think the exhaust smoke from their bad headgasket is due to oil consumption.
    Tom D

    77 e21 - m42
    88 e30m3
    04 330 dinan3
    84 r1000rt
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    14 f800gsa - red headed stepchild!

  5. #30
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    Quote Originally Posted by Tom D View Post
    just clearing up the color issue so that someone who reads this doesn't think the exhaust smoke from their bad headgasket is due to oil consumption.
    Werd. Good lookin out Tom.

    by Dane Wilson, on Flickr

  6. #31
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    oil cap insert is the plastic inner cylinder that the oil filter basically mounts onto, its built into the cap, but can be removed with enough force.

    Is car driveable? will it drive normally off idle? I would suggest driving the car for a couple days, or untill the service engine soon lamp comes on again. If and when it does, please update case with fault code. also ensure that vanos solenoids and camshaft sensors are plugged in.
    -///Mike ///Michael ///Mikey

    pwn noobs /thread

  7. #32
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    Quote Originally Posted by slvrXI
    oil cap insert is the plastic inner cylinder that the oil filter basically mounts onto, its built into the cap, but can be removed with enough force.

    Is car driveable? will it drive normally off idle? I would suggest driving the car for a couple days, or untill the service engine soon lamp comes on again. If and when it does, please update case with fault code. also ensure that vanos solenoids and camshaft sensors are plugged in.
    Car runs great as soon as I hit the throttle. Replaced both camshaft sensors, solenoids plugged in, no change. Still getting code P0011. The first time I started the car after the oil change, it ran VERY ruff and even died a couple of times, it got better after I drove it, that was 2 weeks ago, since then it just idles a bit bad.

  8. #33
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    That fault code indicates a rationality check issue between relative crankshaft speed compared to desired cam shaft angle, and actual camshaft angle on the intake camshaft. Narrowed down to: faulty cam sensor/wiring/connector on intake side, faulty vanos solenoid/wiring/connector on intake side, faulty vanos unit, or faulty crankshaft position sensor/pick up wheel/wiring/connections. If all sensors, solenoids, wires and connections are checked and ok on the intake side, look into crank position sensor. If fault cannot be found, inspection of cams and vanos will be nessecary.
    -///Mike ///Michael ///Mikey

    pwn noobs /thread

  9. #34
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    Quote Originally Posted by Tom D View Post
    white smoke is not oil related, bluest smoke is oil.
    At the same time, it's not like the blue is an "in your face" blue - I find that it's usually just a slight tinge. If the amount of oil being burnt is fairly small, I could easily see someone not noticing the slight blue color.

  10. #35
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    Quote Originally Posted by slvrXI
    That fault code indicates a rationality check issue between relative crankshaft speed compared to desired cam shaft angle, and actual camshaft angle on the intake camshaft. Narrowed down to: faulty cam sensor/wiring/connector on intake side, faulty vanos solenoid/wiring/connector on intake side, faulty vanos unit, or faulty crankshaft position sensor/pick up wheel/wiring/connections. If all sensors, solenoids, wires and connections are checked and ok on the intake side, look into crank position sensor. If fault cannot be found, inspection of cams and vanos will be nessecary.
    I'm having mechanic chk all of that on Tuesday, I will keep you posted. Thank you for the great detail.

  11. #36
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    Quote Originally Posted by rlmelfi

    I'm having mechanic chk all of that on Tuesday, I will keep you posted. Thank you for the great detail.
    Ok, now I'm really stumped. Today, the car seems to have fixed itself. The idle is back to normal and the CES light is off, it runs great! After toying with several hundred dollars worth of parts with no cure, it seems to have reset the timing by itself. I've driven about 1000 miles since the problem started. Does anyone have any idea? I'm not complaining, just confused.

  12. #37
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    Hey guys I just want to leave my experience here because this thread is the closest I could find to my issue. So I changed my OFHG and when I started the car afterwards it had a rough idle that would instantly go away after ~2000 rpms. I got P0011 (which was new) and two system lean codes that were there before. The shop suggested I replace the VANOS system for $1600. I knew my VANOS seals weren't any good but they were probably not the cause. I drove the car for about 100 miles and changed my hose from the CCV to Dipstick because I found it torn and the problem seemed to get a little better. I did an oil change at about 130 miles after OFHG because I reused my oil (which was a big mistake) and it made the idle worse. I got the VANOS oil line and intake solenoid at a junk yard, and crusher washers for the oil line as well as OEM solenoid o-rings from the BMW dealership. After replacing both pieces the rough idle disappeared completely. I have yet to reset the codes and check if they return. I think my issue was that I reused my crusher washers for the oil line, that I didn't tighten it hard enough in that limited space or that the dirty oil clogged the solenoid because when I took it out the pin would not press in like in the replacement one I got. It's hard to say because I changed both things at the same time.

  13. #38
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    Go ahead and clear the codes, if they return then I would check connections for the MAF,
    along with the intake boots and associated hoses that you may have disturbed during the OFHG replacement.

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