spark

My friend has a 91 Suzuki bandit and can't join the Euro based forum and we don't know where to ask. It's a carburetor based question.. thanks in advance to anyone willing to help. Replaced all 4 spark plugs for maintenance. It worked fine the day before. Right after replacing plugs it...

I noticed one of my spark plug boots wasn't fully seated against the valve cover. Its the inside one on the right side of the bike. There's little space in there so I cant get it to seat properly. Any suggestions?

I changed the spark plugs on my bike yesterday, and I was a bit worried when I saw the condition of the old ones. What do you guys think?

Having only 8k miles, I doubt that she needs the plugs even checked, BUT I do have the radiator pulled, and ALL the body work pulled at this point, plus I have the new plugs on hand, so I'm aiming to replace the plugs while I'm "in there." That said, I cannot get the ignition coils off & out...

My FZ1 is a 2008 reg. this morning it started to idle weirdly and it didn't have power when acceleration till it hit higher revs. sounds like it is dropping at least 1 cylinder. I have recently changed all the spark plugs i check them all and tightened them but same issue. So I don't know if...