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Should I Change These Plugs?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by PM5K, Dec 13, 2019.

  1. PM5K

    PM5K Junior Member

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    145K, no idea if they have ever been changed. Pulled the first one on the passenger side. Not sure what the gap should be. These are NGK plugs.

    TIA!
     

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    #1 PM5K, Dec 13, 2019
  2. PM5K

    PM5K Junior Member

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    Sorry, also Im getting about 50mpg so performance wise its not an issue I think.
     
    #2 PM5K, Dec 13, 2019
  3. RRxing

    RRxing Senior Member

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    At 145K, you might as well since you already pulled it...
     
    #3 RRxing, Dec 13, 2019
    Raytheeagle and edthefox5 like this.
  4. Classic Car Guy

    Classic Car Guy Active Member

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    are those NGK original Toyota plugs? Like what he says might as well. This is from my '07 120k. It runs very good but I changed it anyway for its time.
     

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    #4 Classic Car Guy, Dec 13, 2019
  5. edthefox5

    edthefox5 Senior Member

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    Change those plugs.They look like they have 100.000 miles on them.. Its a very clean running combustion chamber.

    While your in there change the valve cover gasket too. If you don't you will be back there doing it anyway real soon. They leak oil into the spark plug wells like all 4 cylinders including mine. Take pictures of the valave train and post them here. Valve train porn..

    Pull off the 2 pcv hoses off the cover and see how cracked the ends are. Then clean out the pcv gunk where those 2 hoses are connected to the throttle body.

    make the most of being in there.
     
    #5 edthefox5, Dec 13, 2019
    dig4dirt likes this.
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