SariMey

Mini Paceman Engine Running Lean

I am writing to inquire about a problem I am experiencing with my 2015 Mini Paceman diesel model. The engine seems to be running too lean. I've noticed a reduction in engine power, the check engine light has illuminated, the engine runs roughly, and there's a noticeable jerking when accelerating. Could this be due to a defective injection valve or injector? I have already checked the spark plugs and catalytic converter but these seem to be fine.

4 comment(s)

Whoa, that sounds rough. Check engine light is never good news. Could be a few things, I guess. Have you checked the mass air flow sensor? Maybe even something with the EGR valve? Not sure though, just throwing out ideas.

Thanks for the suggestions! How would I check the mass air flow sensor or the EGR valve? Is that something I can do myself, or do I need special tools?

Well, checking those sensors can be tricky without the right tools. And honestly, a lean running engine can also damage the catalytic converter over time, so I wouldn't wait too long. Based on what you're saying, especially with the light on, I'd probably take it to a workshop to get it properly diagnosed. Just my two cents.

Thank you for the advice. I took the Paceman to a workshop and they confirmed a defective injection valve. Repair cost was around 515€. Runs like new again!

Join the discussion now: