misfire

[farmtruc]

With hptuners, add the misfire data and see which cylinder is misfiring.
Ignore the small counts on the neighbor cylinder, probably just picking up junk from the actual cylinder misfiring.

Next, swap coil, plug, wires, one at a time, see if it follows.

Next, compression test on that cylinder and others to compare.

Could be an injector issue as well.

[jetmech]

Could be an injector issue as well.

But could it still be an injector if the wideband reads rich when the engine starts to run funny?