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BMW 3-Series (E90 E92) Forum
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N54 Misfire Issue
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Today, 01:03 PM | #1 |
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N54 Misfire Issue
Hello,
I'm sure thousands of posts have been made about this issue before, I just want to see if there are any other issues that I could be facing. About 2-3 weeks ago, I started getting misfires and did a DME scan on my car, which showed that cylinders 4 and 6 were misfiring. If I left the car off for longer than 8 hours, my car would misfire on startup until I let it run for a bit, then restart the car and it ran fine. I concluded that it was probably just leaky injectors. Now, I went to start my car again and did another DME scan and it showed that now cylinders 2,4,5,6 are misfiring. Am I just unlucky and all my injectors are going out at once or could it be another issue causing this like maybe HPFP or what my options could be for a solution? This kind of all happened now out of nowhere so I want to see what my possibilities could be before I drop 2k+ to change my injectors just for it to be another mechanical issue. Some things to note: - Spark plugs changed a little over a month ago and the misfire happened more recently so I don't think this is an issue - Ignition coils are about a year old - I currently have index 12's, I'm unsure how old they are but they do have at least 60k miles on them. - I do have some bolt-ons including Walbro LPFP (running pump gas) and Wedge tune, Ken already suggested that 29E1 could be a vacuum leak and 2AAE could be fixed coded out. DME Active Codes 29CC - Combustion misfires, several cylinders. 29CE - Combustion misfires, cylinder 2. 29D0 - Combustion misfires, cylinder 4. 29D1 - Combustion misfires, cylinder 5. 29D2 - Combustion misfires, cylinder 6. 29E1 - Mixture control 2. 2AAE - Fuel pump. DME Shadow (inactive) codes 2AAF - Fuel pump, plausibility. Any input is appreciated, thanks |
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engine, index, index 12, injector, leak, misfire, n54 |
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