Cataclean and EGR Clog Codes

Discussion in 'Gen 3 Prius Technical Discussion' started by C-in-DC, Feb 21, 2023.

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  1. C-in-DC

    C-in-DC Member

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    I’ve been using premium fuel thinking it would help maintain the fuel injectors. Could bad injectors cause bad air fuel mixture? Would a code appear when injectors have gone bad?

    How can I tell if I’m burning oil other than by checking the oil level?

    Do the spark plugs contribute to the air and fuel mixture?
     
    #261 C-in-DC, May 7, 2025 at 7:10 AM
  2. MAX2

    MAX2 Senior Member

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    When the spark plugs are faulty, they misfire, the fuel does not burn, but flies into the pipe. The temperature on the catalytic converter is high, it burns there.

    The oil level shows that everything is fine - the dipstick does not lose level. When the oil goes away, it either drips from the seals, or also flies into the pipe.

    Errors can appear immediately when there are obvious problems, or they can be in anticipation, when repetitions of events are required at set periods of time.
     
    #262 MAX2, May 7, 2025 at 7:18 AM
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