Truckers Report Jobs

Find Trucking Jobs

Company Driver Company Driver Dry Van Dry Van Flatbed Flatbed Refrigerated Refrigerated Specialized Specialized Owner Operator Owner Operator
More Trucking Job Searches ⌄ Fewer Trucking Job Searches
⌃

Detroit 12.7 Hard Start and No Power

Discussion in 'Trucks [ Eighteen Wheelers ]' started by zaheerkarim, Oct 11, 2015.

Page 4 of 7
  1. Oct 19, 2015 #31
    zaheerkarim

    zaheerkarim Light Load Member

    73
    3
    Jun 21, 2011
    Malawi
    0
    I removed the exhaust manifold and started it (with starting fluid). The cylinders were all heating the same and very little smoke which i think is normal for a diesel engine. I feel the injectors are fine, apart from the seals which are letting oil in to the fuel line. Could the fuel pump cause hard starting and heavy consumption?
     
    zaheerkarim, Oct 19, 2015
    zaheerkarim, Oct 19, 2015
    #31
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Oct 19, 2015 #32
    spyder7723

    spyder7723 Road Train Member

    15,471
    25,077
    Mar 31, 2013
    sarasota, fl
    0
    Consumption, no. Not on a series 60. The fuel rail sends most the fuel pumped back to the tank. Pumping more will just send more back to the tank. I suppose it is possible for oil to get into the fuel system at the pump if the seal on the drive shaft is bad. But that would require oil pressure at the air compressor to be higher that fuel pressure at the pump
     
    Last edited: Oct 19, 2015
    spyder7723, Oct 19, 2015
    spyder7723, Oct 19, 2015
    #32
  4. Oct 19, 2015 #33
    zaheerkarim

    zaheerkarim Light Load Member

    73
    3
    Jun 21, 2011
    Malawi
    0
    Could it be the ECM dying?
     
    zaheerkarim, Oct 19, 2015
    zaheerkarim, Oct 19, 2015
    #33
  5. Oct 19, 2015 #34
    spyder7723

    spyder7723 Road Train Member

    15,471
    25,077
    Mar 31, 2013
    sarasota, fl
    0
    Stop and think for a second. You aretabsolutely passive oil is getting into the fuel. How can an electronic box bolted to the outside of the engine block make oil get into the fuel tanks? If you are certain that oil is in the fuel tank that can only happen where oil and fuel are separated by a seal.
     
    spyder7723, Oct 19, 2015
    spyder7723, Oct 19, 2015
    #34
    drdesl Thanks this.
  7. Oct 19, 2015 #35
    zaheerkarim

    zaheerkarim Light Load Member

    73
    3
    Jun 21, 2011
    Malawi
    0
    Getting suggestions from different people is confusing me. Here in Africa the mechanics depend on try and error lol.... which is very costly. That's why I get onto these forums to try and get as much info from you guys who have experience on these trucks and engines.

    Really appreciate all the info and suggestions.
     
    zaheerkarim, Oct 19, 2015
    zaheerkarim, Oct 19, 2015
    #35
  8. Oct 19, 2015 #36
    BoxCarKidd

    BoxCarKidd Road Train Member

    4,525
    6,586
    Aug 26, 2014
    0
    Google: Detroit Diesel code 46. Then go to Wanderlodge flash code 46. Sometimes I use a headlight bulb to test wiring. A wire that checks good with a test light or ohm meter may not be able to carry current to supply a headlight or ecm. Check the grounds also. Unhook everything and use and use extreme caution, fused jumper wires, no shorting.
     
    BoxCarKidd, Oct 19, 2015
    BoxCarKidd, Oct 19, 2015
    #36
  9. Oct 23, 2015 #37
    zaheerkarim

    zaheerkarim Light Load Member

    73
    3
    Jun 21, 2011
    Malawi
    0
    I borrowed a fuel pump from a friend and tried it on my truck. There was no change at all. I have now removed the injectors and found that the lower seals (3rd from the top) especially on 3 injectors are dry, very brittle and breaking.

    I have ordered a set of seals which I expect over the weekend. I'm just keeping my fingers crossed that replacing the seals will resolve my problems. Although few friends still suggest I must replace the injectors...
     
    zaheerkarim, Oct 23, 2015
    zaheerkarim, Oct 23, 2015
    #37
  10. Oct 23, 2015 #38
    spyder7723

    spyder7723 Road Train Member

    15,471
    25,077
    Mar 31, 2013
    sarasota, fl
    0
    It's there any engine shops around you that could bench test them? And be sure to put oring lube on those before pushing then in the hole. They tear very easily.
     
    spyder7723, Oct 23, 2015
    spyder7723, Oct 23, 2015
    #38
  11. Oct 23, 2015 #39
    zaheerkarim

    zaheerkarim Light Load Member

    73
    3
    Jun 21, 2011
    Malawi
    0
    No engine shops close to me that do Detroit injectors. The nearest is South Africa and it's 1,200 miles away
     
    zaheerkarim, Oct 23, 2015
    zaheerkarim, Oct 23, 2015
    #39
  12. Oct 23, 2015 #40
    spyder7723

    spyder7723 Road Train Member

    15,471
    25,077
    Mar 31, 2013
    sarasota, fl
    0
    How old are the injectors? About how many miles and hours on then?
     
    spyder7723, Oct 23, 2015
    spyder7723, Oct 23, 2015
    #40
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

    • Page 4 of 7