P0304 after head gasket and DT header install

RoninSwanson Mar 11, 2019

  1. ellisfamilyokc

    ellisfamilyokc First Fill-Up (of many)

    Messages:
    387
    Location:
    OKC
    I’m in a similar situation after doing headers. Any resolution?
     
  2. Bushnut

    Bushnut First Fill-Up (of many)

    Messages:
    324
    Location:
    Fredericton NB, Canada
    I wonder if the new headers may have a leak? Or aren’t torqued down properly? Couldn’t hurt to check. Weird that two people have had the same issue with these headers.
     
  3. ellisfamilyokc

    ellisfamilyokc First Fill-Up (of many)

    Messages:
    387
    Location:
    OKC
    Headers are on tight. I replaced the IAC it had been bad for ages. I also swapped the 1 and 6 injectors while this was all apart. IAC code is gone. Then it was throwing a P0300. Let it sit for a day and tried it all again. Just a P0306. Been trying to troubleshoot that all day now.
     
  4. RoninSwanson

    RoninSwanson Test Drive

    Messages:
    37
    im embarassed but, here goes.

    bad spark plug.

    but i swapped spark plugs, right? i must have put #4 back into 4 and not into 1. shop made sure, they did not want to call me back with just that. but im just glad its over. I spent too many hours looking at this project.
     
  5. Bushnut

    Bushnut First Fill-Up (of many)

    Messages:
    324
    Location:
    Fredericton NB, Canada
    Glad for the good new brother. Sometimes it just takes a second pair of eyes to see the obvious.
     
  6. RoninSwanson

    RoninSwanson Test Drive

    Messages:
    37
    hey Ellis,

    what exacty has happened and what did you do. what did you disconnect/reattach/replace.
     
  7. ellisfamilyokc

    ellisfamilyokc First Fill-Up (of many)

    Messages:
    387
    Location:
    OKC
    Mine is still sitting in the driveway throwing P0306. I have replaced the long bad IAC, done new cap, rotor, plugs and wires. While I was doing the IAC, I switched injectors 1 and 6. Still have the issue. I feel like I have addressed fuel and spark that leaves compression. No idea how this could randomly happen with the header swap.
     
  8. RoninSwanson

    RoninSwanson Test Drive

    Messages:
    37
    Coolant leak? 6 is where my head gasket failed.
     
  9. ellisfamilyokc

    ellisfamilyokc First Fill-Up (of many)

    Messages:
    387
    Location:
    OKC
    Update - I have compression on 6! I also know I have spark. Chasing down the fuel issue. I’ll let you know when I know more later this week.
     

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