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SDP acert converted to 6nz, low power, low boost

Discussion in 'Trucks [ Eighteen Wheelers ]' started by maggard359, May 5, 2014.

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  1. May 6, 2014 #11
    little cat 500

    little cat 500 Road Train Member

    2,053
    1,098
    Jan 17, 2010
    Abbottstown PA
    0
    any mufflers on this truck
     
    little cat 500, May 6, 2014
    little cat 500, May 6, 2014
    #11
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  3. May 6, 2014 #12
    maggard359

    maggard359 Medium Load Member

    476
    413
    Nov 20, 2013
    Florida
    0
    No its all straight right now, I pulled them when I did the other exhaust mods.
     
    maggard359, May 6, 2014
    maggard359, May 6, 2014
    #12
  4. May 6, 2014 #13
    little cat 500

    little cat 500 Road Train Member

    2,053
    1,098
    Jan 17, 2010
    Abbottstown PA
    0
    ok was thinking maybe cloged
     
    little cat 500, May 6, 2014
    little cat 500, May 6, 2014
    #13
  5. May 7, 2014 #14
    Rig Wrench

    Rig Wrench Medium Load Member

    398
    66
    Dec 24, 2010
    northeast
    0
    Do you have away to monitor manifold pressure? Like with ET or any kind of diag computer? I know you said you swapped the sensor, but maybe a wiring issue or just a bad part out of the box too (not uncommon too happen). I would also check that your getting 100% throttle range also.
    Hope this helps
     
    Rig Wrench, May 7, 2014
    Rig Wrench, May 7, 2014
    #14
  7. May 7, 2014 #15
    maggard359

    maggard359 Medium Load Member

    476
    413
    Nov 20, 2013
    Florida
    0
    Yes I have monitored boost from gauge, changed throttle sensor, swapped ecm for known working one, I got a cam on the way gonna be here tomorrow. Its a used 6nz cam hoping its gonna bring it to life. I have exhausted everything else possible. I know the low nox on the cam is a problem I just had a feeling I had something else going on as well. I will update when I get cam changed and then go from there.
     
    maggard359, May 7, 2014
    maggard359, May 7, 2014
    #15
  8. Jun 15, 2014 #16
    StarcarPA

    StarcarPA Bobtail Member

    32
    2
    Mar 9, 2014
    0
    Was the cam the issue? I'm looking to convert a acert to a single turbo.
     
    StarcarPA, Jun 15, 2014
    StarcarPA, Jun 15, 2014
    #16
  9. Jun 15, 2014 #17
    maggard359

    maggard359 Medium Load Member

    476
    413
    Nov 20, 2013
    Florida
    0
    No I found a fuel blockage in head.
     
    maggard359, Jun 15, 2014
    maggard359, Jun 15, 2014
    #17
  10. Jul 13, 2014 #18
    Lucar

    Lucar Road Train Member

    1,396
    891
    Aug 22, 2012
    Texas
    0
    How did this go?
     
    Lucar, Jul 13, 2014
    Lucar, Jul 13, 2014
    #18
  11. Jul 13, 2014 #19
    maggard359

    maggard359 Medium Load Member

    476
    413
    Nov 20, 2013
    Florida
    0
    Fuel blockage in head had some rubber in turned sideways and didn't have the full passage. Where it came from I don't know. Didn't change cam even though I bought one, but probably will change it later on. Truck runs great, smooth, lots of power, and about 6-6.8 for mileage. It was one of the worst nightmares I have ever worked on, but I had a nice feeling when it was done.
     
    maggard359, Jul 13, 2014
    maggard359, Jul 13, 2014
    #19
    snowman_w900, Broke Down 69 and logtrucker25 Thank this.
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