02-12-2018, 02:39 PM | #1 |
New Member
6
Rep 28
Posts |
N20 Random Misfire and Cylinder 2&3
So last Friday, I started my car during my lunch break, drove down the street and the check engine light came on. I haven't felt any symptoms yet but not sure since I haven't drove it much since then. I went to Autozone and used the scanner:
Error codes: P0300 Random Misfire detected P0303 Cylinder 3 Misfire detected P0302 Cylinder 2 Misfire detected Autozone printed out the results as well as a solution, which is to replace ignition coils and spark plugs. I ordered the kit that includes delphi ignition coils and spark plugs and plan on replacing this Friday. I get regular maintenance at BMW with my upgrade maintenance plan whenever the maintenance light comes on. They said that spark plugs are included in the plan. When I asked why spark plugs were never replaced if they were included they stated spark plugs aren't due until 100k miles. Currently almost at 62k. They quoted me $175 just to diagnose the misfire. My engine is stock and I don't have any coding done. Besides replacing the ignition coils and spark plugs, anyone else have any recommendations? Really hoping when I replace the parts this weekend and reset the cel that the problem is fixed. |
02-12-2018, 03:08 PM | #2 | |
Colonel
1032
Rep 2,382
Posts |
Quote:
Just install those and you should be fine. Report back if it doesn't fix it.
__________________
2013 F30 328i: MHI Big Turbo, GFB DV+, Mishimoto CAI, ER TIC/CP/Catless DP, AWE Touring Quad Exhaust w/ Resonated Midpipe, NGK LI Plugs, BM3 with PTF Stage 2 91 AGG Tune, Fuel-it Stage 2 LPFP, Solowerks S1 Coilovers, and DEPO/M-Sport Retrofit |
|
Appreciate
0
|
02-12-2018, 04:32 PM | #3 | ||
Major
666
Rep 1,074
Posts |
Quote:
Replace your plugs and maybe coils but get NGK plugs and you should be fine. Normal issue
__________________
Instagram: M2_Medusa
|
||
Appreciate
0
|
02-20-2018, 09:02 AM | #6 |
Colonel
1032
Rep 2,382
Posts |
That's good to hear! What plugs did you get? Same ones as before? I only ask because if you are planning to start modding and upping the boost, you will need a step or two colder plugs.
__________________
2013 F30 328i: MHI Big Turbo, GFB DV+, Mishimoto CAI, ER TIC/CP/Catless DP, AWE Touring Quad Exhaust w/ Resonated Midpipe, NGK LI Plugs, BM3 with PTF Stage 2 91 AGG Tune, Fuel-it Stage 2 LPFP, Solowerks S1 Coilovers, and DEPO/M-Sport Retrofit |
Appreciate
0
|
02-20-2018, 10:12 AM | #7 |
New Member
6
Rep 28
Posts |
|
Appreciate
0
|
02-20-2018, 12:42 PM | #9 |
Colonel
1032
Rep 2,382
Posts |
Okay, cool. It appears those plugs are LI plugs. http://www.rmeuropean.com/Products/1...64-MFG220.aspx
This part number lines up with the manufacturing number listed here: https://www.ngk.com/product.aspx?zpid=40569 When you get them, check that SILZKBR8D8S appears on the plug itself.
__________________
2013 F30 328i: MHI Big Turbo, GFB DV+, Mishimoto CAI, ER TIC/CP/Catless DP, AWE Touring Quad Exhaust w/ Resonated Midpipe, NGK LI Plugs, BM3 with PTF Stage 2 91 AGG Tune, Fuel-it Stage 2 LPFP, Solowerks S1 Coilovers, and DEPO/M-Sport Retrofit |
Appreciate
0
|
02-21-2018, 04:27 AM | #11 |
Private First Class
115
Rep 141
Posts |
Just curious what your plugs looked like? I replaced mine a few weeks ago at 67k miles and they looked good for the milage.
__________________
2014 328i xDrive M-Sport EBII--M-Performance BBK/LSD/Aero--AA Signature Exhaust--Bilstein B6 DampTronic + Eibach Springs + H&R Swaybars + Millway Street Camber Plates + M3 Bump Stops + Dinan Shockware--Apex ARC-8 18x9.5et35+12mm Front Spacers w/Kumho Ecsta V730 275/35--FL-5/EC-7 18x8.5et35 w/Pilot Alpin PA4/Hakkapeliitta 10 Studded 245/45--BavSound Stage 1+Ghost Subs
|
Appreciate
0
|
02-21-2018, 08:51 AM | #12 |
Colonel
1032
Rep 2,382
Posts |
I replaced mine at about 78k miles, so they had just over 50k on them. Not as fouled, but similar. They honestly would've kept going, but I needed colder plugs and replaced them.
__________________
2013 F30 328i: MHI Big Turbo, GFB DV+, Mishimoto CAI, ER TIC/CP/Catless DP, AWE Touring Quad Exhaust w/ Resonated Midpipe, NGK LI Plugs, BM3 with PTF Stage 2 91 AGG Tune, Fuel-it Stage 2 LPFP, Solowerks S1 Coilovers, and DEPO/M-Sport Retrofit |
Appreciate
0
|
03-13-2018, 11:26 AM | #15 | |
Captain
150
Rep 757
Posts |
Quote:
__________________
2014 Estoril Blue II BMW 328i xdrive ///M-Sport
|
|
Appreciate
0
|
03-13-2018, 11:36 AM | #16 |
Colonel
1032
Rep 2,382
Posts |
My coils are at 85k. Still kickin'! lol
__________________
2013 F30 328i: MHI Big Turbo, GFB DV+, Mishimoto CAI, ER TIC/CP/Catless DP, AWE Touring Quad Exhaust w/ Resonated Midpipe, NGK LI Plugs, BM3 with PTF Stage 2 91 AGG Tune, Fuel-it Stage 2 LPFP, Solowerks S1 Coilovers, and DEPO/M-Sport Retrofit |
Appreciate
0
|
03-13-2018, 11:49 AM | #17 |
First Lieutenant
105
Rep 327
Posts |
Jinx! My coils are starting to give out at 90k. I get hesitation under WOT and no CEL. Replaced the spark plugs and re-gapped to .020 on Saturday morning, misfires started on Thursday or Friday. Hoping it really is the coils and not the injectors.
__________________
Mods: MHD Stage 2+ FlexFuel, xHP Stage 3, VRSF 5" HD Intercooler, VRSF Charge Pipe, CircuitWerks Catless DP, AFE Pro Dry S Intake filter, Eldor coils, NGK 97506 @ .026, Bilstein B14 coils.
|
Appreciate
0
|
03-14-2018, 07:32 AM | #18 |
Captain
150
Rep 757
Posts |
question for you .. since you around 85k miles now what maintenance did you have to do on the drivetrain ? i just hit 50k miles and wanting to replace front and rear diff fluids but i was told at bmw that trans dont need to be serviced ...
__________________
2014 Estoril Blue II BMW 328i xdrive ///M-Sport
|
Appreciate
0
|
03-14-2018, 08:56 AM | #19 |
Colonel
1032
Rep 2,382
Posts |
I haven't done any actually. I thought about a tranny drain/fill, but the shop I go to (Run by two BMW master techs) hasn't told me I needed one yet, so here I am!
__________________
2013 F30 328i: MHI Big Turbo, GFB DV+, Mishimoto CAI, ER TIC/CP/Catless DP, AWE Touring Quad Exhaust w/ Resonated Midpipe, NGK LI Plugs, BM3 with PTF Stage 2 91 AGG Tune, Fuel-it Stage 2 LPFP, Solowerks S1 Coilovers, and DEPO/M-Sport Retrofit |
Appreciate
0
|
03-14-2018, 09:02 AM | #20 |
Captain
150
Rep 757
Posts |
man that kind worries me lol it must have that magical BMW fluid
__________________
2014 Estoril Blue II BMW 328i xdrive ///M-Sport
|
Appreciate
0
|
03-14-2018, 09:32 AM | #21 |
Colonel
1032
Rep 2,382
Posts |
It's possible. They wouldn't let me go without something I need, so I trust them.
__________________
2013 F30 328i: MHI Big Turbo, GFB DV+, Mishimoto CAI, ER TIC/CP/Catless DP, AWE Touring Quad Exhaust w/ Resonated Midpipe, NGK LI Plugs, BM3 with PTF Stage 2 91 AGG Tune, Fuel-it Stage 2 LPFP, Solowerks S1 Coilovers, and DEPO/M-Sport Retrofit |
Appreciate
0
|
03-14-2018, 09:35 AM | #22 |
Captain
150
Rep 757
Posts |
shit i guess well see lol don't really want to have any drive-train issues since ill be starting on my motor build this summer
__________________
2014 Estoril Blue II BMW 328i xdrive ///M-Sport
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|