Same truck as was discussed in the BS thread about injectors. A list of what's been dons so far, new plugs, distributor, oil pump.intermediate gear and bushing, tps sensor, fuel filter, one new injector, reman'd ECM, and redid the positive and negative wires at the battery to std lugs and a new 31 series battery with threaded posts.
It had a bad miss under load, and I found one injector dead. Replaced it when I did the ECM yesterday and threw 5 gal of fresh gas and a can of sea foam in the tank, since the gas smelled old, and the trucks been sitting at my house since October, and idk when the po filled it last.
Ran beautifully today while plowing, tons of power, you could floor it and it'd just go. Most the drive was done, coming off a bank in reverse, and the miss came back. Half-3/4 throttle in 4lo, can make it miss almost every time. Sometimes in forward, but mainly in reverse. Fuel.gauge shows just over 1/4 tank.
So, chance its bad gas/water, or a draw straw issue? I've heard of guys having issues with low fuel levels and a miss due to this. Has good fuel psi, 32lbs at idle, which is factory spec. It feels like a fuel miss, not a spark miss, but at this point in lost,
Thinking back, I noticed when idling outside my garage while I cleaned the snow off, it high idled a couple times for a second, but iirc that's a dirty iac motor. Idk if that would have an issue any other time.
Thanks