Car loses/cuts power in 4th and 5th gear

Discussion in 'Mazdaspeed 3 Troubleshooting' started by RedSpeed3, Jul 4, 2021.

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  1. Enki

    Enki Motorhead Platinum Member

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    Oil in the fuel or cylinder lowers the octane rating of the fuel. It's even worse if it comes into the cylinder in droplet form, so find out where that oil is coming from; usually turbo or PCV.
     
    Enki, Sep 22, 2021
    #41
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