piawolf3

Mini Cabrio engine issues

I'm at my wit's end with my 2014 Mini Cabrio The check engine light keeps popping on, the engine stalls when idling, and I've noticed a definite drop in engine power. I suspect it might be a defective fuel pressure regulator, especially since the error started appearing right after I changed the fuel filter. Could this be related? And could it be affecting my fuel efficiency?

4 comment(s)

Sounds like a classic fuel pressure issue. When the fuel filter was changed, did you ensure no air got into the fuel system? Have you checked the fuel rail pressure sensor readings? An engine misfire could be triggered by that. It's like when your heart skips a beat because it's not getting enough blood.

Air in the fuel system makes sense. How exactly do I check the fuel rail pressure sensor? Is that something I can do myself, or am I better off taking my Mini Cabrio to a workshop?

Yeah, sounds like the fuel pressure regulator is the culprit. If you're not comfortable with diagnostics, I'd suggest taking it to a workshop. Messing with the fuel system can be tricky. They can properly diagnose and replace the pressure sensor if needed. They'll have the right tools to ensure the fuel system is bled properly and you don't get any lingering engine misfire issues.

You were spot on It was the fuel pressure regulator. Got it swapped out for 45€. Runs like a dream now. Thanks for your help

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