[BZ92EEE]

First of all sorry for my english )

I have a problem with my engine and i try to figured up from one mounth
In cause Bmw e92 325i n52b25a 2007

IT start god but after 10 sec The idle is verry bad and roughing. When The engine is hot IT starts much better but have moments when the idle is roughing
I have an 18L / 100km (i dont know în MPG means) consumption

I changed sparks, coils, O2 sensor, flush The ecu and nothing .

In the picture attached you can see the adjustment injection time bank 2 is very diferite by the bank 1
I think there is the problem but i don't know what parts to be changed to resolve the issue !
I don't have any errors , nothing
Thanks !

[FROSTBURN2020]

check lpfp and injector

[BZ92EEE]

Originally Posted by FROSTBURN2020

check lpfp and injector

What is lpfp ? Thanks for the answer

[FROSTBURN2020]

Originally Posted by BZ92EEE

What is lpfp ? Thanks for the answer

the fuel pump inside the back seat ，up in the gas tank

[BZ92EEE]

Originally Posted by FROSTBURN2020

the fuel pump inside the back seat ，up in the gas tank

Ok. Now i know what IT is. If i have 5bar (75psi) în fuel rail at The injectors, The pump is ok?

[FROSTBURN2020]

Originally Posted by BZ92EEE

Ok. Now i know what IT is. If i have 5bar (75psi) în fuel rail at The injectors, The pump is ok?

the pressure is too high for n52 maybe the injector is dead

[BZ92EEE]

No, for N52 this is right !
Thanks anyway for the answers !

[Chark-attack]

Try cleaning vanos solenoids?

[BZ92EEE]

Originally Posted by Chark-attack

Try cleaning vanos solenoids?

I did! Nothing changed!

[Handsomecore]

Originally Posted by BZ92EEE

I did! Nothing changed!

Are you in the USA ? Cause there's no e92 325i e92 only comes 328 and 335 . And are you sure you have a n52 and not a n51 ? Cause I never seen n52 fuel injectors go bad n51 injectors go bad all the time . Maybe outside the USA the e92 comes in 325i variant

[BZ92EEE]

Originally Posted by Handsomecore

Are you in the USA ? Cause there's no e92 325i e92 only comes 328 and 335 . And are you sure you have a n52 and not a n51 ? Cause I never seen n52 fuel injectors go bad n51 injectors go bad all the time . Maybe outside the USA the e92 comes in 325i variant

Yeap, I'm in Romania , and is an N52N engine ! I replace the entire rail with injectors and nothing change ! The problem is still there and I didn't make it run ok!
The engine crank and start but the idle is very rough for 1 minute , after one minute it is ok but know I see that about two days have lose power
No errors in the dash no errors in reader test nothing ! Nobody in Romania know to repair petrol engine because here is diesel power all over the roads !