Hpfp failing? Help with logs

Cybored · 06-24-2018, 09:34 AM

Hey guys,

Started having long cranks and really rough idle after letting the car sit for a few hours.

Looking at the logs, it looks like the high pressure fuel pump is struggling to stay where it should and can’t keep constant pressure.

What should I be expecting as far as known good values for a cold start like mine?

Any wisdom on interpreting the logs would be greatly appreciated.

Logs were taken on the first start of the day.

https://datazap.me/u/kn0x/log-152984...og=0&data=3-21

Thanks!

Cybored · 06-28-2018, 03:58 PM

So it was a failing HPFP.

The new one goes to 2k+ psi almost instantly, starting the engine right away.

I also got an improve throttle response at lower rpms.

06-24-2018, 09:34 AM	#1
Cybored New Member 2 Rep 6 Posts Drives: ‘09 135i Join Date: Jun 2018 Location: Montreal iTrader: (0)	Hpfp failing? Help with logs Hey guys, Started having long cranks and really rough idle after letting the car sit for a few hours. Looking at the logs, it looks like the high pressure fuel pump is struggling to stay where it should and can’t keep constant pressure. What should I be expecting as far as known good values for a cold start like mine? Any wisdom on interpreting the logs would be greatly appreciated. Logs were taken on the first start of the day. https://datazap.me/u/kn0x/log-152984...og=0&data=3-21 Thanks!
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06-28-2018, 03:58 PM	#2
Cybored New Member 2 Rep 6 Posts Drives: ‘09 135i Join Date: Jun 2018 Location: Montreal iTrader: (0)	So it was a failing HPFP. The new one goes to 2k+ psi almost instantly, starting the engine right away. I also got an improve throttle response at lower rpms.
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