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    Guest Message by DevFuse
     

    Photo

    2008 MP8 7th injector cleaning

    dpf 7th injector cleaning 2008 emmisions

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    3 replies to this topic

    #1 OFFLINE   thom2and

    thom2and

      Engine Started

    • Puppy Poster
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    • 7 posts
    • Location:Minnesota
    • Make:Mack
    • Model:Granite
    • Year:08

    Posted 17 August 2012 - 11:32 PM

    I have a 2008 Mack with the MP8, 485 hp, and about 40,000 miles. Lately it's been asking for a regen every couple of days. During the regen process the exhaust temp doesn't go over 600*F. I've been told the 7th injector needs cleaning. I'm wondering if anyone knows how to do this. Also, is a gasket kit needed to reassemble? Any help is appreciated.

    #2 OFFLINE   staxx

    staxx

      BMT Forum Guru

    • Pedigreed Bulldog
    • PipPipPipPipPipPipPipPipPip
    • 892 posts
    • Location:Wartrace Tn
    • Make:Mack
    • Model:R686ST
    • Year:1974

    Posted 18 August 2012 - 08:13 AM

    Yes you will need a kit to reseal, 2 hold down bolts and the 2 gaskets remove the 2-- 5/16 bolts careful not to break lift injector up remove gaskets use a soft tooth brush and some carb cleaner and carfuly clean end of injector reinstall gaskets and bolt put some antisieze on the bolt and u will be good to go.Just be very careful not to break the 2 bolts.

    #3 OFFLINE   staxx

    staxx

      BMT Forum Guru

    • Pedigreed Bulldog
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    • 892 posts
    • Location:Wartrace Tn
    • Make:Mack
    • Model:R686ST
    • Year:1974

    Posted 18 August 2012 - 08:29 AM

    The 7th injector is located after the turbo it has 2 coolant line attached to it and a fuel and later models air line the 2 bolts going down into diffuser pipe are the ones you need to remove.

    #4 OFFLINE   thom2and

    thom2and

      Engine Started

    • Puppy Poster
    • PipPip
    • 7 posts
    • Location:Minnesota
    • Make:Mack
    • Model:Granite
    • Year:08

    Posted 19 August 2012 - 08:20 AM

    Thanks for the input.





    Also tagged with one or more of these keywords: dpf, 7th injector, cleaning, 2008, emmisions

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