The largest burner will not ignite. I have checked to insure that it is clean. There does not seem to be gas supply to this burner. Will not light with match. Igniter is sparking well.
Sounds like you may have a problem with that individual burner valve if all the other burners work good and it ignites good at that burner just no gas being released…Here’s a parts page #314 is the part you most likely need. Make sure if you replace it to do a test to make sure you did it right and it has no leaks…use a can of windex or bubbly water after you turn the gas valve at the wall back on after the repair. Good luck
Control Panel parts for GE J2S968SEK3SS - AppliancePartsPros.com