Pull the injectors have the pop pressures and spray patterns checked. You need to find a Bosch fuel injection shop; my local one charges $10 each to test.

When they are out look at the pre chambers and make sure the balls are still in place.

Nailing is usualy a bad injector or a bad prechamber. Sometimes its timing and other things, but start with the simple stuff first.

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2006 CL500
1969 280SE
2023 Ram 1500
2026 Genesis GV70
2007 Tiara 3200