I appreciate all the input. As per suggestions, I started it on starting fluid, ran a few seconds. Let it sit about a hour. Kept doing this over two days. Now the truck starts fine, still an injector or two not clear yet, but I've ran it to warm up temp several times and it keeps getting a...

Did get it to run on starting fluid. Sufficient spark I believe. Will let it set a day and see if the clean treated fuel improves the situation in the injectors. Did hear the HP fuel pump. I was able to bleed old gas out from Schrader valve by cycling the fuel pump. Will run on starting fluid a...

Old GasRan for a couple of seconds so I believe there is spark. Easy enough to check though. I will try a shot of starter fluid and see if it fires enough to push the old gas through. I will repost success or failure.

Purchased a 1988 F150 with I6 engine. Truck ran when parked approx. one year ago. Siphoned out the old gas, added new gas with injector cleaner, removed core from Schrader valve, cycled ignition until I had clean gas coming out of Schrader valve and then put core back in. Truck won't start...