Quote:
Originally Posted by Yellowflash21
Having an idle issue on cold or when engine is warm.
It vibrates on every few seconds and rpm jump between 20-40.
When driving the car, car jerks between 1.2k and 2k rpm, in first and 2nd gear.
Everything above 2k rpm it works normal.
I believe that, that one of the fuel injectors is leaking very little and I think its number 4 after looking the logs.
Now, I'm looking to try to fix this by replacing it with the Bosh one, and I would like to know if fuel injector replacment requires re-calibration after the install?
Also, what are the torque specs for injectors and when replacing the spark plugs?
Thank you!
Here is the idle log:
https://datazap.me/u/yellowflash21/m...31&zoom=17-616 |
Get ISTA+ and run a diagnostics scan on your car would be the first step.
Next if it is the injectors ISTA will give you a step by step guide (including torque values) on what to do to replace it, and if injector coding is required ISTA will allow you to do so with the flow numbers or serial number that will be labeled on the injector.
Quick question, what makes you think it is an injector besides the rough idling?
Let me ask you another question do you have an aftermarket cold air intake? Because that did cause some issues for me awhile back on my m235i, some cars have a rougher idle and rough low rpm performance since it relies on the MAF sensor at those points, which is affected by a new intake.