"Classic" signs of fuel pump failure.
Could be the pump(s) or the relay.
Smells like a pump.
Don't wait until you are stranded.
This is how I spent my 'quality time' this past weekend.
Take the plastic splash shield off right away. If a pump seizes (after dark, in the rain), you may be able to revive it temporarily by striking it with something. Easy enough, but the shield gets in the way! Pack a tarp to lye on, a pair of gloves, and carry a flashlight.
1986 300E 5-Speed 240k mi.