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pacmantravis pacmantravis is offline
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Default 340i - Misfire Cylinder 1 (among other codes) - 10-18-2017, 06:13 PM

Running a Jb4 w/Intake and Meth

I was driving to work this morning and noticed white smoke coming out of my exhaust; with no SES light.

I pulled over, turned the car off and then turned it back on. SES light came on (but no white smoke). I pulled some codes and it looks like I'm misfiring on cylinder 1.

From what I've researched, I'm seeing that it could be a bad spark plug, coil pack and/or injector.

I've attached a screenshot of all the codes. Any idea on where I can start to troubleshoot and work on this? I'm out of warranty (56k miles)
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Terry @ BMS's Avatar
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Default 10-19-2017, 08:04 AM

I've yet to see B58 misfires, but definitely start with new plugs.


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Default 10-19-2017, 01:36 PM

We gaped our stock plugs to .02", I believe stock was .028 or so.



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pacmantravis pacmantravis is offline
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Default 10-21-2017, 03:56 PM

I changed my plugs to NGK 95770 gapped at .022", but I'm still getting the misfire (exact same codes) on cylinder 1. I swapped the coil packs as well (cylinder 1 to cylinder 2 and cylinder 2 to cylinder 1) and am still getting the misfire on cylinder 1.

I've driven it a little bit and there was a brief time when smoke (white or grayish white) would come out of the exhaust. I can't reproduce that and it seems to happen randomly, either at low throttle or when letting off.

Any other ideas as what to look at?

Last edited by pacmantravis; 10-21-2017 at 04:02 PM..
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pacmantravis pacmantravis is offline
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Default 10-21-2017, 04:05 PM

Here is a photo of the plug from cylinder 1
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pacmantravis pacmantravis is offline
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Default 10-21-2017, 04:24 PM

Full disclosure -- I actually changed just the first 5 plugs as getting to 6 (very back) requires removal of more than I wanted to at the time. I need to make sure (before I give up on plugs) -- Cylinder #1 is the one towards the front of the car, right?
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Default 10-21-2017, 04:51 PM

Yes, cyl1 is in the front. Plug itself doesn't look bad but definitely close up the gap to .022".


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pacmantravis pacmantravis is offline
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Default 10-21-2017, 05:23 PM

Quote:
Originally Posted by Terry @ BMS
Yes, cyl1 is in the front. Plug itself doesn't look bad but definitely close up the gap to .022".
That was the stock plug as I took it out. The new plug is in and I set the gap to .022"

I'm still getting the same code.
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pacmantravis pacmantravis is offline
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Default 10-26-2017, 08:53 AM

Update -- Took it to the shop and cylinder 1 has lost compression (less than 40 psi). They are figuring out exactly what it is now (bent rod, bad rings, etc) -- But yeah, not going to be cheap to fix.
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MalibuMafiaV MalibuMafiaV is offline
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Default 10-26-2017, 10:07 AM

Quote:
Originally Posted by pacmantravis
Update -- Took it to the shop and cylinder 1 has lost compression (less than 40 psi). They are figuring out exactly what it is now (bent rod, bad rings, etc) -- But yeah, not going to be cheap to fix.
If I had to take a guess. Bank 1 o2 crapped out and you went super lean on cyl 1 and melted stuff.


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HitmanHearns HitmanHearns is offline
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Default 10-26-2017, 11:54 AM

Quote:
Originally Posted by pacmantravis
Update -- Took it to the shop and cylinder 1 has lost compression (less than 40 psi). They are figuring out exactly what it is now (bent rod, bad rings, etc) -- But yeah, not going to be cheap to fix.
Holy crap. Is this because of your mods?


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Default 10-27-2017, 09:59 AM




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HitmanHearns HitmanHearns is offline
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Default 10-30-2017, 10:30 AM

any updates on your car (crossing fingers it isn't a major issue)?


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pacmantravis pacmantravis is offline
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Default 10-30-2017, 05:05 PM

I'm getting it taken to the dealership tomorrow. The mechanic in my area quoted somewhere around 8K to fix it (essentially replace the engine); but asked that I take it to the dealership for a second opinion.

I'll see what they say, but the first mechanic said that it could be caused by a leak from my meth kit. Even though he didn't notice anything for sure yet, he feels that could be the culprit. He hasn't removed the heads to see what the exact problem is yet -- But a failed ringland and/or bent rod are the most likely issues.

I was in Map 7 and was messing around with an M3 on the way to work. After that settled down, I was cruising for around 5 minutes and then I noticed white/light grey smoke coming out of my exhaust. No SES though. I pulled over to the site, turned off the car, turned it back on...and that's when the SES came on and the car started acting like a diesel (rough idle, etc)
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Default 10-30-2017, 05:59 PM

1. How long have you owned the car?
2. How long has the JB4 been installed?
3. How long has meth been installed?
4. Do you have any datalogs of when you were messing with the M3?
5. How often do you datalog?
6. What mixture of meth and what boost additive were you running?

I know it's a lot of questions, but something doesn't seem right for any type of failure like this on a B58, even with more miles than most. I only have 15k on mine, but I'll be over 50k in no time, too.

Maybe the B58 is not the engine we all thought it would be?


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pacmantravis pacmantravis is offline
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Default 10-31-2017, 05:41 AM

Quote:
Originally Posted by Bullitt1841
1. How long have you owned the car?
2. How long has the JB4 been installed?
3. How long has meth been installed?
4. Do you have any datalogs of when you were messing with the M3?
5. How often do you datalog?
6. What mixture of meth and what boost additive were you running?

I know it's a lot of questions, but something doesn't seem right for any type of failure like this on a B58, even with more miles than most. I only have 15k on mine, but I'll be over 50k in no time, too.

Maybe the B58 is not the engine we all thought it would be?
1 - I bought the car in December of 2015
2 - JB4 was installed early February of 2016 (around 3K miles)
3 - Meth was installed in April of 2016 (around 10K miles)
4 - No datalogs within the past couple of months
5 - Normally after I fill up my meth tank
6 - I was running an 80/20 mixture (VP M1 + Water)

Some notes: I've used maybe 15 total gallons of Meth over the course of 40K miles. I would run in Map 7 sparingly. A few months ago I was throwing codes about my wastegate being sluggish, wastegate start/stop position not found etc -- Turns out that was a slightly melted EWG Cable. The one that was sent to me when I originally bought the cable wasn't really shielded and the cable itself was maybe 2 feet long. The replacement I bought was much longer and more protected. Those are the only real issues I can think of before this happened.
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HitmanHearns HitmanHearns is offline
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Default 11-02-2017, 01:28 PM

Did the mechanic mention where he THINKS the leak (WMI kit) specifically came from? Was it possiblly an error during install or just wear/tear? Do you have any datalogs with meth from the past (older ones)? Do you have a DYNPYPE by any chance?

Hope you get some good news from BMW.


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Last edited by HitmanHearns; 11-02-2017 at 04:24 PM..
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pacmantravis pacmantravis is offline
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Default 11-07-2017, 07:22 AM

Heard back from BMW -- They are actually saying it's the Fuel Injector (and Fuel Rail). They're quoting around $1400 to replace one injector and the fuel rail.
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HitmanHearns HitmanHearns is offline
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Default 11-07-2017, 11:03 AM

Quote:
Originally Posted by pacmantravis
Heard back from BMW -- They are actually saying it's the Fuel Injector (and Fuel Rail). They're quoting around $1400 to replace one injector and the fuel rail.
Oh wow this is fairly good news! You mentioned that the mechanic (non-bmw dealer) said you had low compression in cylinder 1, right? I am just trying to understand the relationship between the low compression and fuel injector. Did BMW mention low compression in cylinder 1 as well?

$1,400 > $8,000 ! woohoo!

Thanks for keep us updated.


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Last edited by HitmanHearns; 11-07-2017 at 11:08 AM..
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pacmantravis pacmantravis is offline
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Default 11-07-2017, 06:45 PM

Quote:
Originally Posted by HitmanHearns
Oh wow this is fairly good news! You mentioned that the mechanic (non-bmw dealer) said you had low compression in cylinder 1, right? I am just trying to understand the relationship between the low compression and fuel injector. Did BMW mention low compression in cylinder 1 as well?

$1,400 > $8,000 ! woohoo!

Thanks for keep us updated.
Thats the odd part; he showed me a photo of cylinder 1 testing at less than 40psi. I'm not sure if the dealer even tested that or are making assumptions. They are saying the fuel rail is a couple of weeks out, so I'll ask them to do a compression test as well just to make sure.
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Default 11-07-2017, 07:03 PM

Quote:
Originally Posted by pacmantravis
Thats the odd part; he showed me a photo of cylinder 1 testing at less than 40psi. I'm not sure if the dealer even tested that or are making assumptions. They are saying the fuel rail is a couple of weeks out, so I'll ask them to do a compression test as well just to make sure.
Do yourself a favor and watch someone do the compression testing. Or figure out how to do it yourself.

I sell measuring equipment for a living. Trust, but verify! Or just verify


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Default 11-07-2017, 08:15 PM

On the b series motors there is a special way to do a compression test due to valvetronic and if you donít do it will get false readings.
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pacmantravis pacmantravis is offline
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Default 11-08-2017, 12:43 PM

Quote:
Originally Posted by Montegoblue335
On the b series motors there is a special way to do a compression test due to valvetronic and if you donít do it will get false readings.
I can see that, however he "said" the other cylinders came in fine at ~180. Either way, I'm waiting on the dealer to see what they say and will go from there. Fingers crossed it's just an injector.
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E92_335is E92_335is is offline
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Default 11-09-2017, 02:42 AM

Quote:
Originally Posted by pacmantravis
I can see that, however he "said" the other cylinders came in fine at ~180. Either way, I'm waiting on the dealer to see what they say and will go from there. Fingers crossed it's just an injector.
Wow same thing happened to my cousins car.. his injector went out, lets hope yours is an injector as well


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HitmanHearns HitmanHearns is offline
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Default 11-09-2017, 10:58 AM

Quote:
Originally Posted by E92_335is
Wow same thing happened to my cousins car.. his injector went out, lets hope yours is an injector as well
Oh dang! Does your cousin have a B58? If so, what modifications?


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