Are lifters adjustable on 2002 3.0 liter Ford Ranger?

Yes, the lifters on a 2002 Ford Ranger with a 3.0-liter engine are adjustable. However, they are typically hydraulic lifters, which automatically adjust to maintain zero valve clearance. If there are issues with noise or performance, it may be indicative of a problem with the lifters or other components in the valvetrain that may require inspection or replacement.