A deep dive into the notorious active fuel management (afm/dod) lifter issue affecting millions of chevrolet, gmc, and cadillac vehicles, covering symptoms, repair costs, and permanent fixes. Learn the most common gm afm problems, including lifter failure, ticking, oil consumption and misfires Torqued only the #1 rockers and watched the #1 exhaust and intake lifters with valley cover off and hear a tick noise after the lifter clears the top of the cam lobe (valves closing).
Understanding Active vs. Dynamic Fuel Management (AFM vs DFM) – Boost
Do you suspect that your engine's afm lifter (active fuel management) has symptoms of failure
How can you prevent afm lifter failure
In an attempt to cure my 6.2l of an annoying lifter tick, i replaced standard lifters with ls7 lifters And i also replaced all the dod lifters, as my engine has the active fuel management on it.
