27-08-18, 02:17 PM
Hello, can anyone please advise if this plug colour is acceptable on my 600 Fazer, it's an NGK Ridium CR8EIX. The other plugs are similar, possibly a touch more grey on the arm. The engine was up to temperature and left ticking over for a minute before plugs were removed. I checked these as I had the carbs off to free off the seized tick over adjuster screw, ahead of balancing the carbs. I found 3 of 4 mixture screws seized and have been unable to free them after leaving them overnight in diesel and heating. The mixture screw that is free was set 1 turn out from fully in, which should be 2 turns (I think for a 99) obviously I'm unable to check the others but using a vernier they measure the same height as each other from the carb casting. The jetting is standard and the bike starts (even without choke) and runs fine but runs a bit uneven at idle 1000-1200.