95 F-150 starting problems

I have a 95 F-150 4x4 with 146K miles. I've never had any major problems with this truck, but suddenly had a starting problem tonight. The engine cranked, but seemed like it was getting no spark or gas. I switched fuel tanks and it started immediately. I switched back to the first tank and it runs and starts normally. A temporary problem with a fuel line, or is a fuel pump starting to go? Fuel filter was replaced about 15K ago. Any suggestions are appreciated.

check for rotted wires by tank