Fouling plugs
 

Hi,

I brought a 2002 ec200 a couple of months ago. I took it for a couple of rides on the beach to get used to it.

Since then I've taken it trial ridding, and when I go through the slow sections or have idling for a while it fouls plugs, leaving them very wet.

I made a couple of mistakes I went from 40:1 (last owners recomendation)synth pre mix to 50:1 to try and solve the problem. I then learnt this was wrong so I back running 40:1. I aslo wasn't happy with the way it was idling so I turned the black plastic screw with the spring till I was happy it was faster. What I didn't do was adjust the air screw, I've since done this but I'm not 100% I've done it right, any tips?

I'm also thinking that does the black plastic screw mess up more than just the idle?

Thanks

The black screw is in deed just your idle screw.Check your carb make sure it is clean.Sounds like maybe you could jet down some.If it only happen's at slower speeds then check your pilot jet and neddle position.

I took the carb apart and cleaned it a couple of weeks ago, and the needle clip was set second from top so thats quite lean anyway.

Does the idle screw affect the position of the needle?

The idle screw changes the height of the slide, as you turn the screw in it raises the slide, as you turn it out it lowers the slide.

The needle is connected directly to the slide so as the slide raises and lowers, it raises and lowers the the needle as well.

Ron