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      09-18-2019, 11:32 PM   #1
Myn54isSLOW
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Hey guys! I've recently started having some issues with my 335is. It seems to stumble or stutter whenever I crack it up.... It doesn't happen every time though. I can leave the car sitting overnight, come back in the morning and crank it up with no issues. But if I leave the car sitting for like an hour right after running it it will stumble right after it cranks up at about 600~800 RPM. After 1-2 seconds of idling RPM's pick right back up to about 1k~1.2k which I consider normal. I did a walnut blast about 5k miles ago. Also got my Plugs (Bosch) & Coils (Delphi) replaced about 500 Miles ago to see if that would fix the issue... AAAANDDDDD NOPE. SOMEBODY THATS GONE THROUGH THIS PLEASE HELP.

I've included a picture I took of my coils. Coil #1 was unusually yellow. I don't know if that has anything to do with the issue I'm experiencing.

EDIT: I also blew out my chargepipe a couple months ago and replaced it with an aluminum chargepipe from VRSF and kept the diverter valves.
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      09-19-2019, 07:55 AM   #2
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Sounds like a leaky injector. Do you know what index they are?
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      09-19-2019, 07:56 AM   #3
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Sounds like a leaky injector. Do you know what index they are?
Index 12 :
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      09-19-2019, 09:17 AM   #4
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Quote:
Originally Posted by Myn54isSLOW View Post
Index 12 :
Dam, those don't usually leak but it is possible.
What type of fuel are you using?

Do you have MHD? Would be nice to see some logs.
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      09-19-2019, 09:25 AM   #5
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Quote:
Originally Posted by NoGuru View Post
Quote:
Originally Posted by Myn54isSLOW View Post
Index 12 :
Dam, those don't usually leak but it is possible.
What type of fuel are you using?

Do you have MHD? Would be nice to see some logs.
Quote:
Originally Posted by NoGuru View Post
Quote:
Originally Posted by Myn54isSLOW View Post
Index 12 :
Dam, those don't usually leak but it is possible.
What type of fuel are you using?

Do you have MHD? Would be nice to see some logs.
93 & Nope. I wish there was a better way to describe it.... But it just feels like the engine is bogged down almost to the point where you feel like it will stall upon startup.
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      09-19-2019, 12:17 PM   #6
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I recommend getting MHD installed at least to show log files and we can help evaluate what the motor is doing.
You need an Android and a good OBD 2 to USB cable like Bimmergeeks.

I don't recall if using MHD for just data requires any licensing but it's probably the best thing I have purchased (Tunes) for this car.
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      10-02-2019, 12:27 PM   #7
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Quote:
Originally Posted by NoGuru View Post
I recommend getting MHD installed at least to show log files and we can help evaluate what the motor is doing.
You need an Android and a good OBD 2 to USB cable like Bimmergeeks.

I don't recall if using MHD for just data requires any licensing but it's probably the best thing I have purchased (Tunes) for this car.
I have a MHD installed, I'll have the KDCAN cable tomorrow. I'll keep you posted.
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      10-02-2019, 12:31 PM   #8
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Quote:
Originally Posted by NoGuru View Post
I recommend getting MHD installed at least to show log files and we can help evaluate what the motor is doing.
You need an Android and a good OBD 2 to USB cable like Bimmergeeks.

I don't recall if using MHD for just data requires any licensing but it's probably the best thing I have purchased (Tunes) for this car.
I have a MHD installed, I'll have the KDCAN cable tomorrow. I'll keep you posted.
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      10-02-2019, 01:46 PM   #9
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Yep, make sure you upload your logs to Datazap.me
How many miles on the car? Might be clogged cats as well.
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      10-02-2019, 01:47 PM   #10
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Yep, make sure you upload your logs to Datazap.me
How many miles on the car? Might be clogged cats as well.
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      10-02-2019, 02:15 PM   #11
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Yep, make sure you upload your logs to Datazap.me
How many miles on the car? Might be clogged cats as well.
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      10-04-2019, 10:53 PM   #12
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Quote:
Originally Posted by NoGuru View Post
Yep, make sure you upload your logs to Datazap.me
How many miles on the car? Might be clogged cats as well.
https://datazap.me/u/nyn54isslow/335...data=6-8-10-14
https://datazap.me/u/nyn54isslow/335is-0?log=0&data=14

57k Miles on the car. I uploaded a few to that link. Let me know if you can see anything.

Last edited by Myn54isSLOW; 10-04-2019 at 11:31 PM..
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      10-05-2019, 06:04 PM   #13
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Quote:
Originally Posted by Myn54isSLOW View Post
https://datazap.me/u/nyn54isslow/335...data=6-8-10-14
https://datazap.me/u/nyn54isslow/335is-0?log=0&data=14

57k Miles on the car. I uploaded a few to that link. Let me know if you can see anything.
Start logging and then start the car.
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      10-05-2019, 06:20 PM   #14
Myn54isSLOW
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Quote:
Originally Posted by NoGuru View Post
Quote:
Originally Posted by Myn54isSLOW View Post
https://datazap.me/u/nyn54isslow/335...data=6-8-10-14
https://datazap.me/u/nyn54isslow/335is-0?log=0&data=14

57k Miles on the car. I uploaded a few to that link. Let me know if you can see anything.
Start logging and then start the car.
Quote:
Originally Posted by NoGuru View Post
Quote:
Originally Posted by Myn54isSLOW View Post
https://datazap.me/u/nyn54isslow/335...data=6-8-10-14
https://datazap.me/u/nyn54isslow/335is-0?log=0&data=14

57k Miles on the car. I uploaded a few to that link. Let me know if you can see anything.
Start logging and then start the car.

https://datazap.me/u/nyn54isslow/sta...=0&data=14

It didn't actually bog down on this data log. It's very random. But let me know if there is anything that stands out. I'll keep logging it every time I start it up until it actually does it.
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      10-06-2019, 05:46 PM   #15
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Yep, this one looks fine. Just post one next time it happens.
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      10-20-2019, 07:39 PM   #16
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Quote:
Originally Posted by NoGuru View Post
Yep, this one looks fine. Just post one next time it happens.
https://datazap.me/u/nyn54isslow/335...38;data=2-5-15

It did it this time..
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      10-21-2019, 06:37 AM   #17
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This section logs strange but maybe that is due to the sensors not activating right on start up but taking a second or two to begin reading.
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