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  1. J

    Intro/Trouble shooting help thread.

    i have replaced that plug every 50 miles or so... it gets better then progresses back. Ill may do the leak down test friday and see what happens.
  2. J

    Intro/Trouble shooting help thread.

    Gaskets seem to be fine... we pressurized the cooling system and it held pressure with no leaks. we pulled the valve cover not too long ago and checked springs and they looked good so i just dismissed the valves being the issue. Guess it's time for a leak down test and see where it is...
  3. J

    Intro/Trouble shooting help thread.

    Hey all.... sorry i haven't been on in a while. School and work got the best of me. I finally replaced the injector a month or two ago, and less than 20 miles later my fuel pump went. So needless to say the Yukon has been a nice lawn ornament recently. I replaced the fuel pump last week and it...
  4. J

    Intro/Trouble shooting help thread.

    i had about 160-170 on cyl 4, and 210 on all the others IIRC.
  5. J

    Intro/Trouble shooting help thread.

    thanks for the help... guess ill have to save up a bit for the injector system. It will just be nice to finally have this thing running right.
  6. J

    Intro/Trouble shooting help thread.

    plug is black, and has a greasy film on it after running for a bit. Would the injector issue be a main injection system (the spider) or could i replace the individual injector and be good?
  7. J

    Intro/Trouble shooting help thread.

    yeah... i have a friend who has a scan tool at work, so i borrowed that and got the timing at 0 degrees. I did, however, put the old gear back in rather than use a new gear. The old gear seemed to be pretty worn and i didn't want to chance a new gear damaging the cam gear.
  8. J

    Intro/Trouble shooting help thread.

    Hi every body... I just wanted to introduce myself and ask a few questions. I recently traded a old jeep i had for my 98 Yukon. I traded with the knowledge that the yukon had a few problems, but they seemed easily fixable and a good deal... well 3 weeks later i am still having issues with it...

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