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BMW 3-Series (E90 E92) Forum
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N54 intermittent long crank on hot start?
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05-06-2022, 12:19 PM | #1 |
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N54 intermittent long crank on hot start?
Hey all!
Having an intermittent inside on hot starts only. On a hot start , sometimes the car takes a long time to crank , sometimes it tries to turn over but dies, then will turn over on the next try . Cold starts are 100% perfectly fine , only happens sometimes on hot starts. I'm on index 12s and my logs look perfectly fine fueling wise? I do have a trim variance (trying to find a shop with a smoke machine ) see if it's an air leak at the manifold. I pulled the plugs the other day after 30 mins after shutting it off plugs were fine not wet nor smelled of gas . Very confused on what it could be? Any suggestions would be great ! Thank you ! |
05-06-2022, 01:46 PM | #3 |
Brigadier General
2004
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I think long cranks are generally a symptom of HPFP failing but I'm not sure whether it usually shows anything in a log or not when that's the only symptom. If it's not been recently replaced, that's where I would most likely focus my attention.
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05-06-2022, 01:52 PM | #4 |
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05-06-2022, 01:54 PM | #5 |
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Hey ! The injectors and HPFP were replaced about 5 yrs back under warranty I have been on and off e so I'm not sure if it may have broke them or anything
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