user135igarrett
joe |
11/02/2024
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Misfire misfire
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11/01/2024
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Misfire under high load high gear 2009 135i 6mt
N54
stock turbos
upgraded CP & BOV
Upgraded FMIC
DPs
85k miles
Ocassionally getting a misfire at high load in higher gears like 3 or especially 4. Took a log of a 4th gear pull where the misfires occurred. Sometimes these misfires throw the car into limp, this one didn’t.
Suspecting fueling issue, possible fuel supply issue as i graphed the logs and see a fluctuation in my rail pressure under load. Unsure if it’s my LP or HPFP. HPFP was replaced in years past by bmw.
Injectors are a mix of 7s and 8s.
Sometimes when i go in the garage the following day after driving the car, i do smell some fuel. Hoping this is just fuel in the DPS or something. I also have some machinery in the garage so really praying it’s not injectors.
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10/24/2024
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