(e.g. most resistants ignore the RF linking feature). Their arguments seem very similar to those "oldtimers" who criticized AM saying that it would never replace the spark gap, or those elders who criticized SSB saying it would never be "real ham radio" like should be CW, or at last...
Using a feeler gauge or spark plug gap tool, check the gap distance – the space between the center and ground electrodes – if needed, adjust Replace or install a new spark plug and tighten – be careful not to overtighten Connect the boot and wire or cover ...