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Pennsylvania should change its emissions testing to meet air quality goals, auto shops say. A faulty device is making that tougher.

Pennsylvania garages say they are left with a tough choice: scramble to find increasingly-rare replacement parts, or send potential polluters back on the road without an inspection.

Dilworth Coffman IV talks about the dynamometer, emission testing equipment for larger vehicles, at Coffman's Service in Warminster, Pa. on Thursday, Sept. 21, 2023. Coffman’s older dynamometer is broken and he’s been trying to repair it himself.
Dilworth Coffman IV talks about the dynamometer, emission testing equipment for larger vehicles, at Coffman's Service in Warminster, Pa. on Thursday, Sept. 21, 2023. Coffman’s older dynamometer is broken and he’s been trying to repair it himself.Read moreMonica Herndon / Staff Photographer