[willworkforsushi]

Hey all,

I've done about 30 minutes of research to figure things out. A couple of quick stats:

2011 335d
98k miles
carbon cleaning done at 80k miles
EGR delete (all emissions) and tune from a local specialty BMW shop
Swirl flap delete

I have been getting mostly cylinder 5 zero quantity adaptation codes since the tune (sometimes cylinder 1), but it could be completely coincidental that it was the actual tune? My shop says that the tune, which is conservative, could have exposed the fact the injectors were probably on their way out, but I don't really have any physical symptoms. No rough idle, shuttering, etc. The car drives completely fine. I reset adaptations immediately after the tune and do it intermittently when I try to clear the codes.

I read that faulty thermostats can sometimes cause the zero-quantity code? I just ran my Foxwell today with the car for about 20 mins and the coolant temps never got over 75 Celsius (and its about 75 degrees F ambient today).

Any thoughts? I really don't want to replace 2 injectors if that truly isn't the issue.

[maryjane]

Order some new orings and copper washers and move the injectors....recode them and see if the CODE moves with the injector.

[willworkforsushi]

Originally Posted by maryjane

Order some new orings and copper washers and move the injectors....recode them and see if the CODE moves with the injector.

OK, that is a good idea. Any other thoughts?

[lnxguy]

Originally Posted by willworkforsushi

OK, that is a good idea. Any other thoughts?

Do that and report back. If the issue follows the injector it needs replacement.

[maryjane]

You can TRY to double dose it with hot shots or marvel mystery oil. The marvel does WONDERS on carbon but only if its not too terrible.

[willworkforsushi]

Originally Posted by maryjane

You can TRY to double dose it with hot shots or marvel mystery oil. The marvel does WONDERS on carbon but only if its not too terrible.

I use the Hot Shots daily every fill up and also use their more concertanted one every 3k miles. I'll try Marvel as well or should I just double up on Hot Shots?

[lnxguy]

Originally Posted by willworkforsushi

I use the Hot Shots daily every fill up and also use their more concertanted one every 3k miles. I'll try Marvel as well or should I just double up on Hot Shots?

Snake oil isn't going to help. Swap the injectors and let us know what happens.

[willworkforsushi]

Originally Posted by lnxguy

Snake oil isn't going to help. Swap the injectors and let us know what happens.

Copy that.