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Car emissions advice

X5smw
in 2001 Onwards Mini Forum

Featured Replies

Evening all.. my friends mini 1.6 just failed its mot on emissions. 
can someone point me in the right direction. Does this sound like lamda sensor failure or cat failure? 
 

thanks!

stu 

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  • Quote

    Morning Stu

    Could well be O2 sensors failing that is where I would start but normally they would throw an engine light.

    It needs a scan to be sure, could be just general accumulation of wear and tear. Things like MAF, engine EVAP system. Vacuum lines, Air leaks even a compression test 

    Good Luck

    Dave

  • Quote
    • 1 month later...
    • Author

    Quick update after a long pause….. 

    filled it up with premium unleaded and redex and took it for a run…. Did this all week til it ran through the fuel and then repeated. Took it for an hours drive before the mot and it passed its emissions test. 👍🏻👍🏻👍🏻

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