How to prevent carbon buildup?

Discussion in 'Ask An Owner Operator' started by ElijahJohn1, Nov 21, 2018.

  1. Brettj3876

    Brettj3876 Road Train Member

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    Easy but we just cant talk about it on here wink wink
     
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  3. Ezrider_48501

    Ezrider_48501 Road Train Member

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    carbon biuld up is generally only a issue with low duty cycle engines, and even then generally only occurs if you have over fueling or oil consumption issues. first time you pull a hill and egt's hit 1000 degree's will burn off any carbon.
     
  4. Brettj3876

    Brettj3876 Road Train Member

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    Do these newer engines hit 1000 on the pyro? I've only been in one new truck a 2015 mack with 445c and pyro never went above 700-735 even lugging it way down pulling a 100k frac pump.

    The 99 i drive is 460 with a 427 flash (better torque curve more bottom end grunt than 460) and we think it might have injectors or a tune but the pyro won't go above 1000 on a long pull. It rolls coal and I know those Etech's arent suppose to. Seeing right around 43psi
     
  5. MartinFromBC

    MartinFromBC Road Train Member

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    If I really work my Mack's which are rated at 505 hp, they still only climb to 810.
     
  6. Socal Xpress

    Socal Xpress Road Train Member

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    I don't understand the question? What specific engine are you planning on purchasing?

    Never heard of a carbon build up problem on D13's or MP8's.
     
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  7. Ezrider_48501

    Ezrider_48501 Road Train Member

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    you don't nessisarily need 1000* on the pyro to clean out the carbon, just saying truck engines work hard enough long enough to keep any real carbon deposits burned out assuming you have no oil/fuel control issues. unless your spending 10 hours a day running a pto. generally cyl wall fuel washing and fuel dilution is more of a issue than carbon buildup with high idle time. carbon buildup is mostly a problem only according to the sales people of company's selling additives they claim fight it. if your getting enough carbon buildup in your engine for it to cause decreased performance you have other issues that are the root cause.

    soot buildup can be a issue esp in after treatment systems such as dpf's and egr's but carbon not so much.

    your much more likley to see carbon biuldup on a stationary engine that does not work hard, sometimes in cars as well if there only babied and driven short distances never really allowing things to get up to temp but even then there is generally excessive oil from excessive wear or fuel added in to the combustion chamber causing the carbon biuldup.
     
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  8. MartinFromBC

    MartinFromBC Road Train Member

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    Exactly.
    Don't idle it.
    It needs a few minutes of idle first start up of the day, and cool down before you shut it off.
    Nothing more.
     
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