Well at first I thought I had bad gas, engine would sputter at mid RPMs after really warmed up, after that, it would sputter at low RPMs, but would run WOT just fine. Two tanks later and several bottles of Heat, convinced its not the gas. I then thought it was the ICM (ignition control module), since the symptoms were similar to an issue 4 years ago. Well that is not is either.
Sometimes it idles at 1200 rpm, other times normal, runs normal, but after a while will sputter at mid and low RPMs.
Any clue? I'm thinking fuel injectors now, but the way it sputters, seems like more than one, at low RPMS sputter so bad comes close to stalling, (but hasn't yet)
Also tried a can of seafoam.