Diesel fuel orange only on left side and truck misses after 10ibs of boost (c15)

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by anthonyar4, May 16, 2020.

  1. anthonyar4

    anthonyar4 Medium Load Member

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    It’s got two of them looking to see where from
     
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  3. anthonyar4

    anthonyar4 Medium Load Member

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    AC shop turned all my coolant heaters valve things on the left of the kite to the right to close so my AC would run. Lol.
     
  4. AModelCat

    AModelCat Road Train Member

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    If its for sure coolant in only 1 fuel tank and that tank has a coolant type fuel heater in it I'd put my suspicion at it starting to leak.
     
  5. anthonyar4

    anthonyar4 Medium Load Member

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    But that’s definitely fuel lines on those. The T under the cab
     
  6. anthonyar4

    anthonyar4 Medium Load Member

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    It’s for sure. Clear orange on one side and nice green on right side
     
  7. anthonyar4

    anthonyar4 Medium Load Member

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    I don’t see any lines other than the two fuel lines on top and what looks like the fuel level sensor right by them. On secondary filter (next to primer) it has a sensor. Never really looked into what that sensor does cause it’s not fuel pressure.
     
  8. anthonyar4

    anthonyar4 Medium Load Member

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    And it’s green at first glance till I shine the bottom of the left tank and then it’s orange. But the right tank is straight green.
     
  9. anthonyar4

    anthonyar4 Medium Load Member

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    Injector cups would have blow by if failed right? Also I popped the cap off the oil fill on top or valve cover and it sucked in. Checked the slobber tube no blow bye.
     
  10. anthonyar4

    anthonyar4 Medium Load Member

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    Just wierd how draining it fixes it for a while.
    I would drive it but I read it can blow my injector tips off.
     
  11. AModelCat

    AModelCat Road Train Member

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    Your miss probably stems from the (alleged) coolant in the fuel.

    I don't think a head gasket would cause coolant/fuel contamination, much less in only 1 of the tanks. I believe the fuel stays strictly in the head. Only place, besides a possible crack between the fuel passage and water jacket, would be cups or o-rings. Even then, fuel pressure should be higher than coolant pressure. Friend of mine with a BXS Acert lost one of those injector o-rings and it filled his cooling system with pressurized fuel.

    Still not seeing how coolant in fuel would show up in only 1 tank of its coming from the engine?

    Which tank did you fill first?
     
    spsauerland Thanks this.
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