[Cyless]

A few days ago when I was driving all of a sudden my car went into limp mode and ran like garbage so when I got to my destination a few minutes later I scanned it and it said cylinder 6 misfire. When I left a few hours later limp mode never came back on it was just some rough idling for a few minutes but thats mostly it but when I swapped the coil with 1 and 6 the code completely disappeared but yet still a misfire, not vary bad one but nonetheless a misfire. I also tried swapping the spark plugs to see if a code would pop up but still nothing (carly). I also noticed a weird and almost sounds like a tapping noise and I can primarily hear it the most when at around 2000 rpm. I'm a little confused on what to do here, if I want to buy all new coils and spark plugs or fuel injectors or something. Can a bad fuel injector or a spark plug make a tapping noise?

Thanks.

[drymite]

A fuel injector causing a misfire can sound like tapping. I believe its a fuel injector i had a similar case with injector 6 as well.. start with plugs n coils but sounds like a leaky injector

[Cyless]

Originally Posted by drymite

A fuel injector causing a misfire can sound like tapping. I believe its a fuel injector i had a similar case with injector 6 as well.. start with plugs n coils but sounds like a leaky injector

So is it okay to drive it still even with a leaky injector? Also how would I know which one to replace considering I have no check engine light, do I got to pull them all and look at them?

[drymite]

Originally Posted by Cyless

So is it okay to drive it still even with a leaky injector? Also how would I know which one to replace considering I have no check engine light, do I got to pull them all and look at them?

Does it crank for long before starting? If the fuel injector is leaking DO NOT DRIVE it ..
But if you dont have a cel any the car isnt acting weird. You can drive it but i would scan the dme for codes asap. You can see whats wrong with more accurate information..

Personally i wouldnt drive it. You can dilute your oil if its forsure a leaky injector and end up with rod bearing failure.

[Cyless]

So I got new injectors and I have put them in but I am having trouble coding them. I'm trying to use INPA and I cant find where the injector program is located. This is the K+D cable im using.
https://www.amazon.com/dp/B0817D2L9J...TE3Z6ED2SB1J7A

[dre0415]

Originally Posted by Cyless

So is it okay to drive it still even with a leaky injector? Also how would I know which one to replace considering I have no check engine light, do I got to pull them all and look at them?

I would definitely not drive the vehicle if its a leaky fuel injector as the worst case scanario is pretty bad. If enough fuel leaks into a cylinder which is probably pretty unlikely but still possible you could bend a rod as liquid gas cannot be compressed. Since the piston cannot compress the gas the weakest link will usally go out in most cases thats the rod. Although its very very unlikely if it were to leak enough fuel its defintely possibly. I would definitely try to get it fixed instead of driving it around. Defintely not worth replacing engine componets just because of a leaky injector.

Reguarding Inpa I found a pretty good video with explanation id take a look at

I cant say I have ever worked on 335 injectors before but I am pretty familar with how inpa works so let me know if you got any questions reguarding that.

[Cyless]

Originally Posted by dre0415

I would definitely not drive the vehicle if its a leaky fuel injector as the worst case scanario is pretty bad. If enough fuel leaks into a cylinder which is probably pretty unlikely but still possible you could bend a rod as liquid gas cannot be compressed. Since the piston cannot compress the gas the weakest link will usally go out in most cases thats the rod. Although its very very unlikely if it were to leak enough fuel its defintely possibly. I would definitely try to get it fixed instead of driving it around. Defintely not worth replacing engine componets just because of a leaky injector.

Reguarding Inpa I found a pretty good video with explanation id take a look at

I cant say I have ever worked on 335 injectors before but I am pretty familar with how inpa works so let me know if you got any questions reguarding that.

Where he points where to go to code the injectors at 17:35 in the video, I don't have that on mine I would post what im talking about but I forgot how to upload images. Sorry.

[Cyless]

I downloaded mikes easy BMW tools, thats the INPA I'm using.

[dre0415]

Wait I guess I never asked is this a 335 or 328?

[Cyless]

Originally Posted by dre0415

Wait I guess I never asked is this a 335 or 328?

2007 335xi

[dre0415]

Originally Posted by Cyless

2007 335xi

Honestly If I were you I would just use ista instead of inpa. Ista is way cleaner and easier to use but requires alot more storage unfortunately and its a bit slower but i think its worth it because its 1000x easier to use. If you got plenty of space I would download it over night. Follow all instructions in the pdf provided. I'm sure alot of people on here will say inpa is better but they're all crazy.

https://kettering0-my.sharepoint.com...I2RDw?e=tTZ4m4

[dre0415]

Let me know if you got other questions I'm happy to help. You can pm me too.

[Cyless]

Originally Posted by dre0415

Let me know if you got other questions I'm happy to help. You can pm me too.

I don't have alot of storage to play around with but I've head some things about protool should I get that or something?

[whyzee125]

I'd have a coder do it remotely, most only charge like $60 then you know it's done right with good software. Index 12's are very reliable so if that doesn't take care of it, you'll still have the peace of mind knowing you shouldn't have to worry about injectors again.

[Sgop335]

Originally Posted by Cyless

I don't have alot of storage to play around with but I've head some things about protool should I get that or something?

Protool is excellent...

[Cyless]

I was able to get everything running and coded, I warmed it up for awhile and drove for 20 minutes and it seem to run good, knock on wood, but Im getting these 2 codes, 29E0 and 29E1. Could it be O2 related or something?

Thanks.

Edit: it doesn't have a vary good cold start either. When ever I cold start it the engine will stumble a little bit then rev up to around ~1200 RPM go down for a second then rev back up but after that goes back down the car runs good.

[Cyless]

So I got the index 9 injectors in and coded but I couldn't figure out what was causing the 29E1 29E0 codes so I took them to a euro shop and they said it could be the injectors because the codes popped up after the injectors were replaced but they said they'll look into it when they get the car in. Was it a bad idea getting used index 9 injectors?

[Cyless]

Its been sometime now and I have recently gotten all 6 index 12 because the index 9 were pieces if junk and caused a bunch of problems. But I'm getting a combustion misfire in cylinder 6, I dont really know why because I have brand new NGK Iridium 1 step colder spark plugs (gaped to .022), new coil packs, index 12 injectors, valves cleaned. It recently came up and I decided to bring up this old post by me because it was about cylinder 6 misfire. it misfires at around 4500 - 5000k RPM if I'm at 3/4 of throttle or so, It doesnt misfire when I go full throttle which is odd.

I did a full throttle datalog and this is what I got.

https://datazap.me/u/cyless335xi/sta...og=0&data=3-24

[Cyless]

Tomorrow I'm going to pull the injector and look at its decoupler to see if its holding seal properly.

[Jimmy311]

This is of interest to me, please let me know what you find out. I am having misfires on 3 cylinders, but only at idle. I have a rough idle that started after the car sat for a month. I see you have been dealing with this for some time. Here are my codes, not sure if you had any of these or just the misfiring in cyl 6:

29CD misfirings, cylinder 1
29CF misfirings, cylinder 3
29CE misfirings, cylinder 2
29D9 misfirings in case of tank filling level too low
29CC misfirings, several cylinders
29E1 fuel mixture control 2

Curious how hard the ISTA coding was for your injectors. I have 328i with N52 (but 330i conversion) and was wondering about bigger injectors if I have to replace them all, but they appear to require coding if I go with aftermarket ones.

[gbalthrop]

Originally Posted by Jimmy311

... I am having misfires on 3 cylinders, but only at idle. I have a rough idle that started after the car sat for a month...
Curious how hard the ISTA coding was for your injectors. I have 328i with N52 (but 330i conversion) and was wondering about
bigger injectors if I have to replace them all, but they appear to require coding if I go with aftermarket ones.

If you have misfire on cylinders 1,2,3 at Low RPM, you likely have an issue with the Ground wire attachment which is shown
in the attached photo, the three (3) Brown wires under the nut on stud between coils for cyls. 1 & 2. That Ground point is the
most likely common factor for misfire on all three cylinders on Bank 1.

AFAIK, your MSV80 DME has NO provision for "coding" of injectors. Your N52K injectors are Port Injection, while OP's N54
has "Direct Injection" with a different type of injector, operating at MUCH higher fuel pressure. His MSD80 DME
does have provision for Coding of HP Direct Injection Injectors.

Please let us know what you find,
George