Project DD moonlighting as trail rig

[Maengelito]

Well, my truck started hesitating under load. I cleaned the MAF and ran seafoam. Only made it worse. If I floor it, it will rev up and then afterfire. Funny thing is, if I rev it by hand, it's fine. If I rev it with the actual throttle pedal, it cracks up and doesn't rev properly. Could be plugs and wires, I guess. I'm supposed to drive to the beach in it tomorrow morning, so I guess I'm taking the Miata.

What's with the seafoaming of everything? Its not some miracle potion.

Was the truck driving fine yesterday and then all of sudden hesitating today? When its something sudden like that, its usually something electronic. If afterfire = backfire, then some fuel isn't getting burned properly. Maybe you have something wrong with the ignition (spark plug or maybe wires/coilpack?)