Quote:
Originally Posted by biglare
I had the same thing happen a few weeks back. This happened before I put my tune on, so totally stock tune and engine.
The dealer had it for a week to troubleshoot it and found that bank 1 was misfiring. They replaced the injector to find that it was not sealed correctly. They ended up replacing the entire side of fuel injectors and all the plugs as well as a couple of coils. I have had it back two weeks now and no issues. I talked to the tech and he said it is now good to go. I will still wait another few weeks to confirm all is well before I install my ESS Tune.
So what happened?
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Same happened to my previous X6 5.0i, after 29k miles, so I went to the dealership, they have replaced ALL injectors, and coils. To be honest, after they did that, car felt like a brand new. I wish they were done it way back ))))