Reply To: Valve clearance, camshaft, camshaft tensioner – a problem or a serious fault? Sep 21, 2025 at 8:33 AM #20831 Maciek👤 Member🖊 Topic Author Topics: 6Replies: 27Country: PolandBike Model: Hyosung GT125 Naked Comet Hi, on the first two pictures is Rear spark plug and the two last one is the front spark pług.