Misfires after sitting for two weeks.

[LVP]

If you see the roughness on startup, what happens if you turn it off and try to restart? I've heard guys who were faced with replacing the levers to overcome these symptoms, simply reverted to restart instead of the cost of replacing. Next time it happens, try a restart and see if that makes a difference.

Mine was throwing misfire codes along with the roughness. See what your screenshots show.

[garrett.fell]

Happened to me again yesterday after it was sitting for a week. Running a little rough on first start but didn't last long. I gave it a little gas and it cleared up. I drove it around a bunch during the day and no issues. It was sitting in a heated 50 degree garage overnight (turned the heater on Friday night).

I hooked it up to DIS and no errors found.

Last weekend I picked up a bottle of that redline sl-1 fuel system cleaner I heard people reference on here and filed it up at Costco! I figured I'd give that a go....I just haven't driven it much more than 25 miles since then.


Sent from my iPhone using Tapatalk

[LVP]

For some reason the misfires never happen when I have the car, but only when my wife drives it. Yesterday morning it was -6.5C. Didn't happen right away though. She started it, went to clean off the snow and it started running rough and shaking. She went in, saw the check engine light flashing, shut it down (we talked about this scenario not being good for driving), and called me to look at it. A restart and it ran fine with no check engine. Took it for a quick jaunt around the block and it was fine.

I'll try to see what codes pop up on the weekend. Intermediate levers are at 0.3mm. I may slowly start to bump up in 0.1mm increments.

[LVP]

It appears DIS will only allow a 0.3mm or 0.8mm setting. As I was waiting for the engine to come up to temp, I wanted to reseat the driver side engine cover. So I got the main one off and by then the temp was good. I set the min value to 0.8mm and went back to the engine cover. I got the driver side off to reseat it (one of the sensor cables wasn't routed right), but I noticed the CCV cover wasn't clipped fully on. Only half connected. Maybe this was contributing to the rough idle at cold start-up? I clicked each tab of the cover down and put the intermediate lever setting back to 0.3mm. As a note, when I set it to 0.8mm, it did say that setting wasn't approved for the X5. So, for now, CCV fixed, intermediate levers set to 0.3mm and I'll see if the issue still arise. The CCV's are new (well, about 25,000km ago). The drivers side one was nice and supple and not torn.

Cheers.