Immediately after filling up at some stop 'n rob I hadn't been to before, it starts pinging & running poorly. Since then, I have pumped out 3/4 of the tank, into garage gas cans & the minivan. I swapped in a new fuel filter just a while ago, after filling up with 92 octane at the usual known gas station. I also replaced the spark plugs, cap & rotor, & reinstalled the original coil & chip. The other ignition coil was a spare from a parted car of last fall. I checked the gap of the crank sensor. The MAF worked on Jeff's car since the pinging started.

I did, immediately after the pinging started, look up Winfred's posts regarding sucking a few ounces of water though the intake. I sucked a few ounces though the intake at above 3,000 rpm. A plume of smoke was created & kinda lingers.

Have I missed anything in resolving this?

Could I have jumped timing on the m30? Does that happen? It will rev up pull to redline, just not happy about off idle through midrange.