and now it goes Ping Ping Ping...

Discussion in '80-Series Tech' started by rockclmbr, Oct 24, 2005.

  1. rockclmbr

    rockclmbr

    Messages:
    610
    Likes Received:
    4
    Joined:
    Oct 1, 2004
    Location:
    Bay Area
    I just recently discoverd my 80 pings a little when under load :crybaby: . To be more specific, we noticed it while wheeling this past weekend. I was in low-low and climbing up a steep hill, at the initial throttle and low RPM, I could just hear it out the window. My buddy whom was standing outside could hear it clearly. This morning on the way to work, I could hear it. Typically I have the stereo on, and the exhaust and tires are so loud I can't hear anything anyways. I've always thought it might just be exhaust rattle on some mornings.

    My question of course, how long could this pinging have been occuring and what's the possible harm to the engine or other components?

    A few details: 117,000 miles on a well maintained rig. 1997 FZJ80, normally aspired, runs mobil 1 full-synth 10w-30 since 70k miles. I always run cheap regular fuel (costco gas) from California.

    I'm going to add the Chevron Techron Fuel Cleaner system for the next few weeks to see if I get any improvement (if the issue is caused by excessive carbon buildup). Along with a possible increase in octane hopefully this will be resolved.

    Has anybody else discovered this while running regular 87 octane?
     
  2. landtank

    landtank SILVER Star

    Messages:
    19,317
    Likes Received:
    1,618
    Joined:
    Mar 27, 2003
    Location:
    Groveland MA
  3. rockclmbr

    rockclmbr

    Messages:
    610
    Likes Received:
    4
    Joined:
    Oct 1, 2004
    Location:
    Bay Area
    I'll check it out, thanks!
     
  4. parabola

    parabola

    Messages:
    316
    Likes Received:
    0
    Joined:
    Jun 27, 2005
    Location:
    Austin, TX
    fwiw, i've had a similar sounding issue as you; light ping on throttle tip in. Tried 89 octane instead of 87 and it would get somewhat better but that was a less than ideal solution.

    About two weeks ago I changed my oil (switched to M1 10W-30), replaced the accelerator cable, and replaced a (suprisingly) dirty toyota air filter with a fresh wix filter and lo and behold the ping is gone. I've even run a few tanks of 87 without any ping. I can't personally come up with a reasonable explaination for why these things changed anything but they did.
     
  5. rockclmbr

    rockclmbr

    Messages:
    610
    Likes Received:
    4
    Joined:
    Oct 1, 2004
    Location:
    Bay Area
    That is good news! I also feel it would be unreasonable to have to swithc to Unleaded Plus at this stage in the game (especially with the spike in fuel lately!)

    I just changed the oil and got my new reusable air filter from CDan! This weekend I'll be changing out the plugs/wire/dizzy cap and see if there is an improvement as well.
     
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.