Possible leaky fuel injector, looking for help

Yellowflash21 · 03-24-2020, 03:37 AM

I've posted this on M2 forum, and I didn't hear a single feedback so far.

While I hope that someone here could give me some info:

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.

e

I believe that, the one of the fuel injectors is leaking very little and I think its number 4 after taking some idle logs.

Now, I'm looking to try to fix this by replacing it with the Bosh OEM ones, and I would like to know if fuel injector replacement 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

brandohando · 08-07-2020, 12:57 PM

I just got myself a 2014 435i that unfortunately just got an injector stuck (really bad though as the car shuts down the injector and I'm running on 5 cylinders). I don't have experience with M2's but I'm using this guide as a reference so hopefully it can give you some hints or get you started.

Link: https://www.bmwrepairguide.com/bmw-e...r-replacement/

03-24-2020, 03:37 AM	#1
Yellowflash21 First Lieutenant 370 Rep 354 Posts Drives: M2 Join Date: Apr 2014 Location: Slovenia iTrader: (0)	Possible leaky fuel injector, looking for help I've posted this on M2 forum, and I didn't hear a single feedback so far. While I hope that someone here could give me some info: 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. e I believe that, the one of the fuel injectors is leaking very little and I think its number 4 after taking some idle logs. Now, I'm looking to try to fix this by replacing it with the Bosh OEM ones, and I would like to know if fuel injector replacement 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
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08-07-2020, 12:57 PM	#2
brandohando Enlisted Member 14 Rep 34 Posts Drives: 2014 BMW 435i Join Date: Jul 2020 Location: Chicago, IL iTrader: (0)	I just got myself a 2014 435i that unfortunately just got an injector stuck (really bad though as the car shuts down the injector and I'm running on 5 cylinders). I don't have experience with M2's but I'm using this guide as a reference so hopefully it can give you some hints or get you started. Link: https://www.bmwrepairguide.com/bmw-e...r-replacement/
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