Ok heres the deal, This is my friends 90-93 bullitt top tank style tomos, Im not sure on the year, but anyway, my friend asked to fix it a while back, so I did and got it running, but didnt put on an air filter yet, I let my friend ride it and they were riding in the woods, and he fell and must have sucked in dirt etc. because it wouldnt run, I got home and took it apart and cleaned the carb and got it running again. I gave it back to my friend, and now he's asking me to fix it and paint it (like 5months later from the last time i fixed it)
The moped takes very long to start up and it doesnt idle at all, when you approach a stop sign it will die before you fully stop, So today I took the head off and I noticed that there (very hard to explain) but it looked like shit baked onto it, and on the piston, it looked the same and i remember from my moped (batavus) that the piston is like evenly covered with carbon but on my friends tomos it was very uneven there was a part with no carbon at all, and when i took a paper towel and wiped around the clinder's wall, it hard dirt and crap on it, after I put it back together and cleaned the carb it ran a little better but it still didnt really idle for very long.
Well any help is appreciated thanks.