Help troubleshooting my 93 s10 blazer With 4.3 v6 vortex running rough wont idle hard to start is it fuel filter plugs any suggestion?

it was runnin great. now it barely runs. i need some ideas of what it might be so i dont spend a ton of money guessing

If you have a "check engine" light on, have the codes read. This may lead you to the problem.