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BMW 3-Series (E90 E92) Forum
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Help need, n54 cyc 1 and 2 misfire, fuel smells, fuel smoking, Fan speed on
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| 04-22-2026, 10:09 AM | #1 |
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Help need, n54 cyc 1 and 2 misfire, fuel smells, fuel smoking, Fan speed on
So my car has been fine however since hitting 109k ive had few issues but today was the worst!I was driving and gave it some beans when it was on correct temperature and my car started to misfire bad, limp mode. I scanned it using (car- pal top don) and it came up with Cylinder 1 and 2 misfire, several misfires and fuel pressure plausibility, the car engine was shaking badly, white smoke coming from the exhaust and really smelled of fuel. This evening i changed the cylinder 1 - 3 bank 1 sparkplugs to new ones and cylinder 1 sparkplug stank of fuel and was bit wet. I did a cold start today and took around 4 seconds to crank/start and the car was still running horrible the radiator fan was on full speed. Is this my HPFP failing or something else. These where the codes: DME - 21/04/2026 0029f1 - fuel pressure, plaubility 0029cd - combustion misfire, cylinder 1 0029cf - combustion misfire, cylinder 2 0029cc - 0029cd - combustion misfire, several cylinders Since changing replacing new spark plugs on cyc 1-3 these where the codes. cold start engine but turned off after 10 seconds as it sounded horrible DME - 22/04/2026 0029f2 - High pressure system, fuel pressure |
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