11-11-2021, 06:15 PM | #1 |
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428i N20 Smoke Chimney
Putting this up here for troubleshooting and discussion. Hopefully someone can use this one day to diagnose their car. That's how I kept my N54 running, thanks BimmerPost
2015 428i with N20 engine. Prod date 10/14. 69k miles on odometer On the commute home I was WOT for two shifts and at the top of third, it hit Drivetrain Malfunction. Drove it home and car did not start after I shut it off. Some C(h)o(r)de(s): P300 P0303 P0087 P0304 P0301 P15DF Fuel high-pressure system, cold start: pressure too low I changed the coils and plugs, car started right up, but still misfiring. Ran the car for a minute and it started smoking from the exhaust (didn’t notice the color it was night time) New set of chords: P15DF Fuel high-pressure system, cold start: pressure too low P0303 Cylinder 3 misfire 11AC02 high-pressure fuel system, cold start: pressure too low 140010 several cylinders detected 140310 cylinder 3 damaging exhaust gas after start up 140001 several cylinders fuel injection is switched off 140301 cylinder 3 fuel injection is switched off 140002 several cylinders damaging exhaust gas after start up 140302 cylinder 3 fuel injection is switched off Additional Info: - Oil was changed frequently throughout its life but the spark plugs weren't listed on car fax. Upon inspection they were well used and cyl 3 and 4 had a little oil on the tips of the plugs. - oil leaking from VC and OFHG for sure, but not much - I had 2000 watts of sound going through a custom speaker system - I drive like a grandma and the one time I WOT it misfires and limps home - i can hear the hpfp struggling after I ran it for a minute, but I'm not ruling out the LPFP Let me know what you guys think. I'll be update this thread periodically.
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Last edited by kenzocan; 11-12-2021 at 12:12 PM.. |
12-12-2021, 09:26 PM | #3 |
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I replaced the LPFP, HPFP, and one fuel Injector and now she runs like water.
If I only replaced the injector I think I could have got away with it for cheaper but preventative maintenance… 🤓. No codes at all anymore. And idle is smooth at 600 rpm |
Appreciate
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DG33068.50 |
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