[KaffineKiller]

I have a 2008 E92 335i. December 2010, did the fuel injector recall. August 2011 injectors 1-4 failed and were replaced. At 45,000 miles spark plugs were replaced. Car has 70,000 miles now. Dealer has so far replaced the DSC control module thinking that the car was sending false traction control warning to the car, however, never displaying the traction control light.

In gears 4,5, and 6, between 3000-4500 RPM, the car hesitates or misfire at full throttle, basically as if I was going to pass someone on the highway. Car is not throwing any codes at all. Never noticed at low gears or city driving, only highway.

I have read that carbon buildup, spark plugs, coils, injectors, or ecu can all be possible issues. But as I said, 4 injectors new as of August, and the other two have a year on them. Spark plugs have 25,000 miles.

No mods to the car.

Car is still under 100,000 BMW Maintenance and CPO warranty. Any insight into what this can be. It has been in twice to the shop so far and still have issues. Thanks

[mdvw86]

Originally Posted by KaffineKiller

I have a 2008 E92 335i. December 2010, did the fuel injector recall. August 2011 injectors 1-4 failed and were replaced. At 45,000 miles spark plugs were replaced. Car has 70,000 miles now. Dealer has so far replaced the DSC control module thinking that the car was sending false traction control warning to the car, however, never displaying the traction control light.

In gears 4,5, and 6, between 3000-4500 RPM, the car hesitates or misfire at full throttle, basically as if I was going to pass someone on the highway. Car is not throwing any codes at all. Never noticed at low gears or city driving, only highway.

I have read that carbon buildup, spark plugs, coils, injectors, or ecu can all be possible issues. But as I said, 4 injectors new as of August, and the other two have a year on them. Spark plugs have 25,000 miles.

No mods to the car.

Car is still under 100,000 BMW Maintenance and CPO warranty. Any insight into what this can be. It has been in twice to the shop so far and still have issues. Thanks

Walnut blast time!

[KaffineKiller]

Help!

[GmoBmw]

Originally Posted by mdvw86

Walnut blast time!

This.

[Jeff@TopGearSolutions]

Which cyl is misfiring

[triggz]

What does the misfire feel like at full throttle?

[KaffineKiller]

Originally Posted by triggz

What does the misfire feel like at full throttle?

Feels like a skip in the engine multiple times for about 3-5 seconds as I accelerate through 3000-4500 rpm

[KaffineKiller]

Originally Posted by Jeff@topgearsolutions

Which cyl is misfiring

I am not throwing any codes so I have no idea

[vasillalov]

Originally Posted by KaffineKiller

Feels like a skip in the engine multiple times for about 3-5 seconds as I accelerate through 3000-4500 rpm

My money is on a bad injector.

[BES335xi]

Originally Posted by KaffineKiller

I am not throwing any codes so I have no idea

I've had something similar and i've changed the 3 old injectors which their part # did not end with 261, i've followed vasilalovs DIY & also created one my self after and all is good now. No hesitation/hiccups and most of all car does not feel like its misfiring anymore. I was stock when it started happening, then i went FBO and was still the same, changed the 3 injectors i said above and i'm good. But i do need to get my carbon cleaned up though, I've opened it up and they are filthy!

[KaffineKiller]

Originally Posted by vasillalov

My money is on a bad injector.

All injectors are new as of December 2010, and 4 new as of August 2011.

[BES335xi]

Originally Posted by KaffineKiller

All injectors are new as of December 2010, and 4 new as of August 2011.

Open the engine cover and confirm that the 2 from 2010, their part # ends with 261, i'm just saying since not alot of ppl had problems with these new injectors..

[Laid Black 335i]

Originally Posted by mdvw86

Walnut blast time!

Carbon Buildup on the Intake Valves has nothing to do with the car misfiring. Based on what the OP is describing, it's either a bad spark plug or a bad injector.

[Zechariaha]

fml i have this same problem but only on certain days and only when jb4 is on extremly annoyng

[KaffineKiller]

Originally Posted by BES335xi

Open the engine cover and confirm that the 2 from 2010, their part # ends with 261, i'm just saying since not alot of ppl had problems with these new injectors..

Simple to do? Never done anything with the engine

[BES335xi]

Originally Posted by KaffineKiller

Simple to do? Never done anything with the engine

Yeah, check out my DIY on changing Injectors, well basically look at the pics and you'll get an idea of what to do. If you're just checking, simply unscrew the 3/4 screws on the engine cover, slide it out and Injector's are all visible after..
Give it a shot, it's simple.

http://www.e90post.com/forums/showthread.php?t=651538

[Eleventeen]

Miscoded injectors? Others have had their injectors replaced and the dealer neglected to code or miscoded.

[KaffineKiller]

Originally Posted by BES335xi

Yeah, check out my DIY on changing Injectors, well basically look at the pics and you'll get an idea of what to do. If you're just checking, simply unscrew the 3/4 screws on the engine cover, slide it out and Injector's are all visible after..
Give it a shot, it's simple.

http://www.e90post.com/forums/showthread.php?t=651538

All 6 injectors are 261

[BES335xi]

Originally Posted by KaffineKiller

All 6 injectors are 261

Ok, Good...Maybe carbon buildup? or you got 1 of the injectors on its way out...idk, i just told you to try the above, because it fixed my problem.

[KaffineKiller]

Originally Posted by BES335xi

Ok, Good...Maybe carbon buildup? or you got 1 of the injectors on its way out...idk, i just told you to try the above, because it fixed my problem.

I appreciate the help. I really want to believe its not the injectors since they are all new. I want to think its the coils or carbon build up. Car goes back to BMW on Tuesday...

[BES335xi]

Originally Posted by KaffineKiller

I appreciate the help. I really want to believe its not the injectors since they are all new. I want to think its the coils or carbon build up. Car goes back to BMW on Tuesday...

Cool, hopefully it's nothing major and it'll get fixed fast...& hopefully the BMW Dealer can replicate the problem otherwise they wont touch it, with no codes being thrown..

PS; let us know of what was it when you get it all sorted out.

[KaffineKiller]

Originally Posted by BES335xi

Cool, hopefully it's nothing major and it'll get fixed fast...& hopefully the BMW Dealer can replicate the problem otherwise they wont touch it, with no codes being thrown..

PS; let us know of what was it when you get it all sorted out.

I will defiantly let you know what it is. I already went back and took one of the head techs at my dealership for a ride and was able to duplicate the problem with him in it.