6nz driving me nuts!

Discussion in 'Trucks [ Eighteen Wheelers ]' started by shawn1972, Jun 19, 2014.

  1. Truck engine machinist

    Truck engine machinist Light Load Member

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    Dec 2, 2011
    USA
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    This sound to me like your injector seats could be warped. That will cause a miss. Are your injector nice & shiny, when you pull them out? If not, then combustion is probably coming up past the injector seats in the head. (Note, not the injector tubes) This burns up the sacrificial o-rings at the bottom of the injector, allowing combustion to get to the fuel injector o-rings. That can be repaired in frame with the head still installed.
     
    EverLuc Thanks this.
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  3. shawn1972

    shawn1972 Light Load Member

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    Mar 23, 2014
    Madera Ranchos, CA
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    I would have to pull them again to check. They were clean last time though.
     
  4. triplet08

    triplet08 Bobtail Member

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    Jul 4, 2014
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    I didn't see you message till kinda late and didn't wanna bother you to late. If you don't mind, shoot me another message with a good time to call tomorrow. Thank you sir
     
  5. Truck engine machinist

    Truck engine machinist Light Load Member

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    Dec 2, 2011
    USA
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    I cannot see how to message you directly. How do I do that?
     
    shawn1972 Thanks this.
  6. shawn1972

    shawn1972 Light Load Member

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    Mar 23, 2014
    Madera Ranchos, CA
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    not shure i can call or my number is
     
    Last edited by a moderator: Sep 17, 2014
  7. shawn1972

    shawn1972 Light Load Member

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    Mar 23, 2014
    Madera Ranchos, CA
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    Checked for air in fuel return from head to check valve and found no signs of air. I also checked return from check valve to tank. It had some fine bubbles that went away if you pinch the line a little. Is this normal? Any thing else I should check before I shoot it.
     
  8. Long hoods

    Long hoods Bobtail Member

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    May 13, 2018
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    Did you ever find the problem with your motor..? I’m got the same problem
     
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