The #1 Ford Explorer enthusiast resource for 25 years! We cover the Explorer, ST, Lincoln Aviator, Sport Trac, Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Aerostar. On and offroad projects.
Register Today It's free! This box and some ads will disappear once registered!
Elite Explorer members see no advertisements, no banner ads, no double underlined links, can add their own profile photo, upload photo attachments in all forums, and Media Gallery,
create and save more private conversations, and more.
Join Today. Your support is greatly appreciated.
Love it when old threads get resurrected, and teach me something.
I didn't know about that Octane Shortening Bar either. I had a Pinging issue a few years back, and thought the worst. Nobody ever brought this "BAR" up as an item to check. For me, it turned out to be an old weak pump relay, starving the fuel under load. But now I know, there is something else to check!
I had pinging under load as well, but it turned out to be the intake gaskets leaking. After I replaced them it went away. I also replaced and rebuilt everything that is rebuildable during the R&R of the intakes, so it could have actually been any number of seals and O-rings, including the fuel injectors.