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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 02-04-2013, 02:52 PM
Kens BMW Kens BMW is offline
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P0306 #6 cylinder misfire

Ok so my 1999 323ic threw the P0306 engine code. I changed all spark plugs reset the code and went for a good day then pop back on. Should I go for the coil pack next or what? Any suggestions? Thanks
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  #2  
Old 02-04-2013, 03:36 PM
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drivinfaster drivinfaster is offline
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swap the #6 coil pack with the #5 coil pack. if the fault moves to #5 then replace that coil. if it stays #6 then you have something else going on.

but do this first, then report back,



df
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  #3  
Old 02-05-2013, 04:53 AM
Kens BMW Kens BMW is offline
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Ok so I swapped out the coil packs on #5 and #6 cylinders. I'll let you all know what happens. I'm hoping it comes down to a bad coil pack.
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  #4  
Old 02-05-2013, 05:21 AM
hnaz hnaz is offline
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And if it is the coil pack, stay away from the Bav Auto coil packs. You'd be better off just pouring sand into the cylinders than using their coil packs.
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  #5  
Old 02-05-2013, 06:03 AM
SCJon SCJon is offline
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And if it is the coil pack, stay away from the Bav Auto coil packs. You'd be better off just pouring sand into the cylinders than using their coil packs.
Easy! I have BavAuto coil packs and don't have too much of an issue with them. But to the OP just remember a wise man once said "Guessing gets expensive" (df) so I wouldn't replace anything you aren't sure you need to replace.
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  #6  
Old 02-05-2013, 07:33 AM
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Easy! I have BavAuto coil packs and don't have too much of an issue with them. But to the OP just remember a wise man once said "Guessing gets expensive" (df) so I wouldn't replace anything you aren't sure you need to replace.
wait... aren't you having a random misfire issue? Not to thread jack...
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  #7  
Old 02-05-2013, 07:43 AM
SCJon SCJon is offline
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I am but it stays on cylinder #1 even when I switch the coils. So I've pretty much eliminated them as a suspect. I think...
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  #8  
Old 02-05-2013, 09:10 AM
Kens BMW Kens BMW is offline
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So SCJon whats your next step since you swapped the coil packs?
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  #9  
Old 02-05-2013, 09:30 AM
SCJon SCJon is offline
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Between me and the previous owner nearly everything has been tried. My next step is going to be a compression test. If I can ever get around to it. But my car does not actually miss, it runs normally except once in a while it actually misses, but turning it off and restarting it causes the miss to disappear.
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  #10  
Old 02-05-2013, 11:24 AM
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petriej petriej is offline
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Intermittent misses are just the worst. If you are brave, try removing and inspecting the crankshaft position sensor. My 6er (different breed, I know!) had a whacky one that would intermittently fail and cause a miss. It was covered in metal shavings that kept it from reading the flywheel correctly and would cut fuel.

Probably not your issue, but like you've said, you've tried nearly everything.
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Jared, why don't you just put "It's Giubo" in your sig? Save a lot of typing.
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this jared guy sounds intimidating lol.
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  #11  
Old 02-05-2013, 12:04 PM
SCJon SCJon is offline
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One of the BMW dealers in Raleigh even said that it was possible that the computer was set to European standard and the American coils had fouled it up. I seriously doubt that's it. But even they resorted to that level of ingenuity trying to figure it out. For me it's more frustrating than anything else, just like you said. It just makes me nervous sometimes when I drive it and it does miss. Thanks for the tip. I don't know if I have the stomach for the CPS yet though. I may resort to it eventually.
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Last edited by SCJon; 02-05-2013 at 12:05 PM.
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  #12  
Old 02-05-2013, 03:30 PM
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drivinfaster drivinfaster is offline
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wait, wut??

coils no sprechen ze deutsch??

maybe it was metric spark not sae spark??




df
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  #13  
Old 02-06-2013, 07:13 AM
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wait, wut??

coils no sprechen ze deutsch??

maybe it was metric spark not sae spark??




df
I'm right there with you on the oddity of that diagnosis. They were clearly reaching and wanted Sean (my PO) to flash the computer. He knew the comp had no governor on it from driving it Germany and he declined. So I may just look for a set of OEM coils and try it if I can get some at the junkyard cheap, but I don't think they are to blame. At this point, I'm leaning toward the ever so slightly off spray pattern in injector #1 as the culprit.
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  #14  
Old 02-10-2013, 05:06 PM
Kens BMW Kens BMW is offline
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Ok so quick update. I swapped #5 and #6 coil packs and no check engine light yet. Its been at least 4 days. However the car is running a little rough What the hell?!?! I figured we would have got the check engine light back on either telling me bad coil pack or something else. Since its running rough I'm not sure if I should change the fuel filter, Injectors, or what?
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  #15  
Old 02-10-2013, 05:16 PM
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First things I would change:
Plugs
air filter
Fuel filter.

They are cheap and basic maintenance regardless.

Get more complicated only after you have eliminated the simple.

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HAS KEN HAD HIS MEDS YET?
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  #16  
Old 02-10-2013, 05:41 PM
Kens BMW Kens BMW is offline
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All plugs have been replaced so I'll move on to the fuel and air filters and see were that gets me. But it still baffles me why that check engine light hasnt popped on yet
Thanks
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  #17  
Old 02-10-2013, 05:48 PM
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jonesin jonesin is offline
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To be certain, what plugs did you use?
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I grew up in a time when the internet was just a baby. Grammar back then versus now... holy cow. You could watch the degradation of society as the internet became more mature.

HAS KEN HAD HIS MEDS YET?
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  #18  
Old 02-10-2013, 05:53 PM
Kens BMW Kens BMW is offline
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I used what was recommended on this forum, the NGK BKR6EK
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  #19  
Old 02-10-2013, 05:54 PM
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jonesin jonesin is offline
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Perfect.

Just making sure you didn't get Bosch +4 Platinums.
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I grew up in a time when the internet was just a baby. Grammar back then versus now... holy cow. You could watch the degradation of society as the internet became more mature.

HAS KEN HAD HIS MEDS YET?
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  #20  
Old 03-05-2013, 01:27 PM
Kens BMW Kens BMW is offline
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Its back, P0306 code

Its back, the dreaded P0306 #6 cyclinder misfire. I swapped the #6 coil pack with the #5 and actually went a whole month without the coded. Then all of a sudden it pops on today Ok so its not the coil pack. All spark plugs have been changed. Whats next, the injectors?? I think I'm running out of things to change!! Any more adviced?
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  #21  
Old 03-05-2013, 01:29 PM
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Do some inspection first. Is there anything in the spark plug socket, like oil, water, etc.?

Do a compression test. You might have a faulty head gasket or valve cover gasket.
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Quote:
Originally Posted by hornhospital View Post
Jared, why don't you just put "It's Giubo" in your sig? Save a lot of typing.
Quote:
Originally Posted by e36 miguel View Post
this jared guy sounds intimidating lol.
2005 X5 4.8is Le Mans/Black/6spd Steptragic
1999 M3 Cabrio TiAg Metallic/Dove Grey/Black 5 Speed Manual
-------------------------------------------------------------------
1997 328iC Schwarz II/K/K 5MT SOLD 5/2012
2004 645Ci Mineral Silver Metallic/Black 6MT RIP 04/2011
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  #22  
Old 03-05-2013, 01:29 PM
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ZeGerman ZeGerman is offline
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What condition are your coil boots in? Are they cracked, oily, or have discolored contacts?
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  #23  
Old 03-05-2013, 01:31 PM
Kens BMW Kens BMW is offline
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Nope, No oil at all in the plug sockets. I made sure to look at them all when I changed them.
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