BMW 335i 2009 - injector issue - help please
Discussion
HI PH-ers,
With the demise of BMWland I need to call upon your vast wealth of experience for help please.
My 2009 335i has gone in for a service. Has a misfire fault which I knew about, it finally threw up an engine management light so they got a code, coil and spark need replacing on one cylinder - fine.
REplaced - re-diagnosed, and now computer says all 6 injectors need replacing. Erm - ok.
RAC Warranty company apparently won't cover the injectors as they consider that wear and tear (at 74,000 miles?) and I'm loathed to spend the ridiculous amount of money replacing them, for their computer to then say 'oh sorry - wasn't that, now it's this'
so questions. Are injectors a known issue on the 2009 335i's? And should my warranty company not cover that?
And if you're a magician, will this fix the fault?
Thanks in advance.
With the demise of BMWland I need to call upon your vast wealth of experience for help please.
My 2009 335i has gone in for a service. Has a misfire fault which I knew about, it finally threw up an engine management light so they got a code, coil and spark need replacing on one cylinder - fine.
REplaced - re-diagnosed, and now computer says all 6 injectors need replacing. Erm - ok.
RAC Warranty company apparently won't cover the injectors as they consider that wear and tear (at 74,000 miles?) and I'm loathed to spend the ridiculous amount of money replacing them, for their computer to then say 'oh sorry - wasn't that, now it's this'
so questions. Are injectors a known issue on the 2009 335i's? And should my warranty company not cover that?
And if you're a magician, will this fix the fault?
Thanks in advance.
Does the computer say all 6 injectors need replacing, or is just that it has given some information that a technician has interpreted in that way?
Fault codes don't tell you to replace things generally, but pinpoint where an issue may lie. I would be astonished if six injectors have all failed at the same time.
Fault codes don't tell you to replace things generally, but pinpoint where an issue may lie. I would be astonished if six injectors have all failed at the same time.
No idea the unhelpful service lady knows nothing about cars but said computer says all 6. If it's a known issue on this engines can someone point me to some evidence if they have any then I can take that up with BMW. It's only been misfiring at cold it's fine when warm so I'd be surprised if it was all 6 too.
There is a known issue as they even did a recall.
http://www.e90post.com/forums/attachment.php?attac...
http://www.e90post.com/forums/attachment.php?attac...
Good luck, and from the change of username it seems you're ready for battle. However, if all the injectors need changing it may be better you also contact BMW and simply get it done, otherwise you could be without a car. A ninja in a 335i, that I can picture. But a ninja driving a 1.2 litre rental car, no way
Smuler said:
I'm a 2009 (59) and yesterday had all fuel injectors and buffers replaced. It's N54 engine, yours will be the same. I have AUC warranty, 71k miles. It was accepted as fault, not wear and tear.
Hi smuler - can you let me know where you had that done please, as BMW are saying it's not a known issue with mineSO - small update.
As all 6 have failed the warranty co are saying the injectors are end of serviceable life. They won't pay up. If 2 or 3 had failed they would but they're not interested if all 6 have.
BMW are saying they're not EOSL they've failed, there's no known issues with the piezo injectors on the cars of this year (there were with the 2 years before though) so they're not covered by any recalls etc.
Big bill for me then
As all 6 have failed the warranty co are saying the injectors are end of serviceable life. They won't pay up. If 2 or 3 had failed they would but they're not interested if all 6 have.
BMW are saying they're not EOSL they've failed, there's no known issues with the piezo injectors on the cars of this year (there were with the 2 years before though) so they're not covered by any recalls etc.
Big bill for me then
Ninjagirl said:
SO - small update.
As all 6 have failed the warranty co are saying the injectors are end of serviceable life. They won't pay up. If 2 or 3 had failed they would but they're not interested if all 6 have.
BMW are saying they're not EOSL they've failed, there's no known issues with the piezo injectors on the cars of this year (there were with the 2 years before though) so they're not covered by any recalls etc.
Big bill for me then
You can slice me with Ninja sword, for possibly being thick, but in your first post the diagnosis was that all six should be "replaced" and not that all have "failed." Could there be a difference? My "failure" codes were on numbers 1 and 2 but I had them all "replaced," similarly after two singular injector failures on my E46 I had all 6 replaced, as common sense. Might be worth a check, with whoever performed the original diagnosis. Because if they confirm it's not a complete failure, then the warranty company can be challenged As all 6 have failed the warranty co are saying the injectors are end of serviceable life. They won't pay up. If 2 or 3 had failed they would but they're not interested if all 6 have.
BMW are saying they're not EOSL they've failed, there's no known issues with the piezo injectors on the cars of this year (there were with the 2 years before though) so they're not covered by any recalls etc.
Big bill for me then
Plus, I would still challenge the warranty company anyway and when was your car built? It seems it's going to be pretty close to the recall period in the sheet Dann posted. Worth pressing BMW customer services?
Edited by Smuler on Monday 27th July 11:53
Ninjagirl I have an N54, but the N45T which is almost the same but the 1M engine. I did a lot of research on potential issues with the fuel system. The most common issue is the HPFP (high pressure fuel pump) causing misfires and cold start problems. There is even an upgraded one by BMW and third parties also released some for the tuner world.
http://www.bimmerfest.com/forums/showthread.php?t=...
In the US the HPFP now has a 10 years/120,000-miles warranty. "BMW has released a replacement pump with a part number ending in -943. The replacement pump may solve the problem."
See here a complete DIY and place to buy the parts: http://www.e90post.com/forums/showthread.php?t=654...
You can also download an app for your phone, if you buy the USB cable and OBDII socket too you can log/view the errors yourself - then speak to more knowledgeable people on the forums or a BMW indi specialist (at this point don't waste your time with BMW UK). The app is called MHD Flasher N54.
Personally I would buy the cable, buy MHD Flasher, get a complete ECU data log and then see what it says. I highly doubt all the injectors are at fault, I suspect they throw errors due to lack of fuel pressure - if you read about how piezo injectors work it would correlate (upward of 200 bar of fuel pressure).
You could also speak to the tuners directly and send your data logs (JB/Cobb) or visit AMD Tuning in Essex - they are very knowledgeable and would be able to help you.
Good luck
http://www.bimmerfest.com/forums/showthread.php?t=...
In the US the HPFP now has a 10 years/120,000-miles warranty. "BMW has released a replacement pump with a part number ending in -943. The replacement pump may solve the problem."
See here a complete DIY and place to buy the parts: http://www.e90post.com/forums/showthread.php?t=654...
You can also download an app for your phone, if you buy the USB cable and OBDII socket too you can log/view the errors yourself - then speak to more knowledgeable people on the forums or a BMW indi specialist (at this point don't waste your time with BMW UK). The app is called MHD Flasher N54.
Personally I would buy the cable, buy MHD Flasher, get a complete ECU data log and then see what it says. I highly doubt all the injectors are at fault, I suspect they throw errors due to lack of fuel pressure - if you read about how piezo injectors work it would correlate (upward of 200 bar of fuel pressure).
You could also speak to the tuners directly and send your data logs (JB/Cobb) or visit AMD Tuning in Essex - they are very knowledgeable and would be able to help you.
Good luck
Not sure if it's been linked to, but N54 injectors should be replaced in banks of three. If a single injector fails, all three in that bank need to be replaced. It's therefore entirely feasible that one injector in each bank may have failed, resulting in all 6 requiring replacement. This would mean 4 injectors are not at the end of their serviceable life and the warranty company wouldn't have the wriggle room.
Check with the tech how many injectors actually failed.
Check with the tech how many injectors actually failed.
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