|
|
|
11-06-2020, 03:18 PM | #1 |
Registered
0
Rep 2
Posts |
E82 135i N55 - Misfiring :(
Hi,
Codes: https://ibb.co/DkV07RH So I’ve been getting misfires only when I floor it and go over 3k rpm. It goes in to limp mode with the half check engine light, and shakes like crazy. Car goes back to normal after a restart. So far I’ve changed the spark plugs and coil packs, I’m thinking of doing the injectors next. On the diagnostics, it’s saying multiple misfires on multiple cylinders. Is it most likely to be the injectors? I should probably mention I’m running MHD Stage 2+. I really love driving this car but the constant issues are putting me off had my water pump and thermostat replaced last week... Thanks for your help |
11-06-2020, 06:00 PM | #2 |
Captain
453
Rep 610
Posts
Drives: 2008 135i E88
Join Date: Aug 2019
Location: South jersey
|
I hear you on the constant issues. My car is just one thing after another. But like my mechanic(who has several track cars in various states of disrepair) says "more power, more problems, more money".
I just went through constant misfires after I was finishing logs for my new turbos. Started with plugs and coils, went to cleaning injectors and putting new seals. Then back to thinking oil leak from vcg fouled a couple plugs(which it did). Then back to vcg and more plugs. Then to precision racing coils, then new injectors, then because I bent a injector hold down plate, had to fix that. Thats is after chasing 30ff boost leak codes all the way around the engine to turbos. And now fixing the several small oil leaks everywhere. But its a blast to drive.lol. Seems everytime I put my foot to the floor it cost me $1000. I should have got a used boat. Lol!! Anyway first thing you should try is cleaning, putting new seals, and switching around and recoding injectors and see what happens. After doing that my car went from misfires on 1 and 5 to nearly all cylinders misfiring. One of my injectors was loose from a crappy seal and would not take a new seal either, not sure why. I think it was worn down metal or something. There's cheap seal tool/injector kits out there. Invest in one if you don't already have one. Oh and look at your injectors while car is running first. Mine had one shaking in there. Good luck |
Appreciate
0
|
11-07-2020, 07:19 AM | #3 |
Private First Class
46
Rep 124
Posts |
Hi & Welcome!
Having similar issues on a cold start, boost leak & pinched cam shaft after one - two hours of driving ECL replaced the below parts. Indy suspects it's a carbon build up problem and conducted a smoke test, a walnut blast and see how things go. - x2 Solenoids - Boost Pressure Valve - Spark Plugs |
Appreciate
0
|
11-09-2020, 06:57 PM | #5 |
Colonel
530
Rep 2,083
Posts |
Could be O2 sensor as well. Do you have a log?
N55's can also experience a "ghost" misfire caused by the flywheel but this usually doens't occur until you're pushing 450+ rwhp. Is your car a DCT?
__________________
2013 135is DCT Carbon Black Metallic |
Appreciate
0
|
06-08-2023, 04:46 PM | #6 | |
Registered
0
Rep 1
Posts |
Quote:
Hey, were you able to figure out the issue? Ive been having the exact same thing happen to me and im starting to go crazy! |
|
Appreciate
0
|
06-08-2023, 05:30 PM | #7 |
Brigadier General
976
Rep 3,870
Posts
Drives: 330i, 135i
Join Date: Feb 2006
Location: San Diego CA
|
I keep hearing about these bad experiences with the N54 and N55 engines. I just bought one. Having an N52 engine with no major problems for 16 yrs and going strong. Now I am on this 1 forum trying to learn from you all. ..
Lets hope you find a solution for your issue soon |
Appreciate
0
|
06-13-2023, 12:59 PM | #8 |
New Member
13
Rep 5
Posts
Drives: 2012 BMW 135I CONVERTIBLE
Join Date: Apr 2023
Location: Hattiesburg, MS
|
What would you do?
Is buying a used engine going to fix this car or should I just give up? I replaced the missing parts but I can't replace the engine unless a miracle happens. So it sits in my garage and I'm torn whether to keep trying to make it a great car or give up. Any advice?
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|