C15 acert bxs problem!!!!

Discussion in 'Trucks [ Eighteen Wheelers ]' started by N14 cummins power, Dec 1, 2011.

  1. N14 cummins power

    N14 cummins power Bobtail Member

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    Yea I have a c15 acert bxs twin turbo cat can anyone tell me where my manifold pressure should be at I know the max I ever see it at is 23 new to cats but this thing sure is gutless compared to my n14!!
     
  2. Rig Wrench

    Rig Wrench Medium Load Member

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    Not right, our BXS 550's make 55lbs, I would say you have an issue
     
  3. stranger

    stranger Road Train Member

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    I've never seen a stock BXS 475 go over 30 psi, and that was pushing it hard uphill.
     
  4. Rig Wrench

    Rig Wrench Medium Load Member

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    i got 2 in my fleet, both heavy haul 550 programs, turn 50-55lbs with good fuel pressure and no cac leaks. outperform our mxs 550's (makin 50lbs also)
     
  5. stranger

    stranger Road Train Member

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    Never drove a 550. Last company I worked for had 10 BXS 475s. I drove almost all of them, and never saw over 30. The 10 MXS 475s were the same way. These were all rather weak. I suspect a 550 would have been much better with more boost.
     
  6. N14 cummins power

    N14 cummins power Bobtail Member

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    Thanks for all the help guys I think I am going to get Pitt power or pdi and put on here not sure which one yet maybe that will wake it up a little because this things decently needs some help!! Or converting it over to single turbo just not sure I want to be out that much money!!
     
  7. paul 1052

    paul 1052 Heavy Load Member

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    You should definitely see more than 23 lbs of boost.

    Have you had the cac tested? I'd start there you're giving up a lot already.
     
  8. pullingtrucker

    pullingtrucker Road Train Member

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    I would not throw aftermarket high performance parts at this motor until you solve the boost issue. To many guys have motor issues and start throwning money in parts...the engine will run a little better, but will never run to its full potential until you solve the underlying issue. Start with the basics.

    Boost leaks at the CAC, hoses, clamps, aluminum intake elbow going into the head, and even between the turbos and pre cooler. You would be surprised when boost leaks develope and the lack of testing procedures from CAT.

    Also check your fuel pressure. The fuel pressure is even more important on a ACERT than any other engine for some reason. Even though the older MBN, 6NZ and ACERT all run the same fuel system, the ACERT responds more to fuel pressure issues. Do a search on this site and you will find all the info you need on your engine.

    I also highly suggest you stay away from the Pittsburgh Power Box if that is one of the mods you are thinking about. Again, do a search and you will see why.
     
    07-379Pete Thanks this.
  9. Mr. Haney

    Mr. Haney Road Train Member

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    23 psi of boost is very low for this engine. Id be looking at the turbos to see if they're damaged from a sleeve or other turbo failure also. You may also have a precooler coolant leak that has allowed the coolant to build up in the precooler and not allowing boost to get through it to the engine. The air temperature coming off the turbos will cook any coolant leaking into the air side of the precooler to cause it to build a scale across the heat exchanger coil this stops air flow into the engine
     
  10. N14 cummins power

    N14 cummins power Bobtail Member

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    Thanks guys appreciate all the help hope to get this problem fixed soon!!
     
    Last edited: Dec 2, 2011