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Cummins N14 celect plus leak near rear head

Discussion in 'Trucks [ Eighteen Wheelers ]' started by 4vmach1, Nov 3, 2014.

  1. Nov 3, 2014 #1
    4vmach1

    4vmach1 Light Load Member

    184
    72
    Apr 3, 2013
    Los Angeles, CA
    0
    Hello, I havent been near our truck for over a month and I went yesterday to fire it up and let it idle to operating temperature, while I was dusting around the engine I noticed the rear passenger side head was wet below the jake housing. I smelled the fluid and it appears to be diesel or some sort of oil? Honestly I tasted it a little bit and it was oily and not coolant. It was smoking a little white from the exhaust when you put the engine under a load and let off the pedal. Can it be fauly injector o-rings or injector cup or simply the jake housing gasket leaking? Any suggestion would be great because I plan on adjusting the valves soon and digging into the issue causing that leak.
     
    4vmach1, Nov 3, 2014
    4vmach1, Nov 3, 2014
    #1
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  3. Nov 3, 2014 #2
    QUALITYTRUCK

    QUALITYTRUCK Road Train Member

    1,817
    1,783
    Jun 14, 2009
    romulus,mi
    0
    probably the fuel cross over tube between the heads.they are small,double arched metal tubes.you have to remove rocker boxes to change them.don't forget new orings! good luck.
     
    QUALITYTRUCK, Nov 3, 2014
    QUALITYTRUCK, Nov 3, 2014
    #2
    4vmach1 Thanks this.
  4. Nov 3, 2014 #3
    4vmach1

    4vmach1 Light Load Member

    184
    72
    Apr 3, 2013
    Los Angeles, CA
    0
    That may sound correct because I replaced one of those on the front head. Thanks a lot.
     
    4vmach1, Nov 3, 2014
    4vmach1, Nov 3, 2014
    #3
  5. Nov 3, 2014 #4
    Inland-Pilot

    Inland-Pilot Light Load Member

    229
    135
    Jun 23, 2010
    Jackson, Ms
    0
    I'd say something other than the fuel crossover. If those are leaking, it's usually pretty bad and will poor from between the heads when it runs down between the heads. If it's just a little damp at the jake to rocker gasket, I'd say it's that gasket. The leak would have to travel upwards to dampen that area, if it was the crossover, because the fuel crossover is at the top of the head and below the rocker box, both of those are below the jake.
     
    Inland-Pilot, Nov 3, 2014
    Inland-Pilot, Nov 3, 2014
    #4
  7. Nov 4, 2014 #5
    d4rk

    d4rk Bobtail Member

    9
    0
    Nov 3, 2014
    0
    Heads on the N14 are not specific to position should be a little plate with o-rings on the rear top of the head could be leaking but highly unlikely
     
    d4rk, Nov 4, 2014
    d4rk, Nov 4, 2014
    #5
  8. Nov 4, 2014 #6
    JohnP3

    JohnP3 Road Train Member

    1,594
    684
    Feb 21, 2010
    Rock Creek B.C. Canada
    0
    Wash it and look.
    It could be the valve cover gasket, it could be the Jake gasket, I dought it is the fuel cross over that you would smell, I could be oil coming up a Bolt.
     
    JohnP3, Nov 4, 2014
    JohnP3, Nov 4, 2014
    #6
  9. Nov 5, 2014 #7
    4vmach1

    4vmach1 Light Load Member

    184
    72
    Apr 3, 2013
    Los Angeles, CA
    0
    Since the truck was sitting for a while, I purchased about 10 gallons of fuel and poured it in with some power service additive & the exhaust is smoking white or maybe a tint of blue when you let off the throttle under load. Can this be caused by the power service additive or water in the fuel since the tanks were less then 1/8 full? It has never smoked like this before.
     
    4vmach1, Nov 5, 2014
    4vmach1, Nov 5, 2014
    #7
  10. Nov 5, 2014 #8
    JohnP3

    JohnP3 Road Train Member

    1,594
    684
    Feb 21, 2010
    Rock Creek B.C. Canada
    0
    White smoke is usually from low compression, and unburnt fuel, I would pull the exhaust pipe off the turbo and look at the very end of the turbine for damage, if something has gone thru the turbo then you need to pull the exhaust and run it seeing which cylinder it is., check the valve set on that cylinder, run it and listen at the cam box for a cam failure. Check the drain plug for metal and drain and cut apart the filter looking for metal. Then you can make the disition with the facts.
    I have a test injector to install shop air preasure in the cylinder TDC and BTC. looking for a bad hole.
    Just a thought!
     
    JohnP3, Nov 5, 2014
    JohnP3, Nov 5, 2014
    #8
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