u/Ehurtado77

My 2013 Hyundai Elantra has a persistent misfire (P0303). I’ve already replaced spark plugs, swapped coils, checked injector power with a noid light, and verified compression is good. The issue didn’t move with coil swaps, and the misfire is still on cylinder 3. Fuel pressure is around 45+ psi and injectors are getting signal. What should I check next?

160k miles, automatic transmission, 1.8 liters

Tomorrow I’ll be doing a cylinder leak down test