thank you all for helping me out,you are great! many thanks to opiose! you are a tuning master!i'll make copy's of your post and share it with fellow beginners ! you are all great!!!
i'm also very happy cause my question opened a subject thats really helpful for all beginners trying to understand and to learn more!
heres a new question : i've noticed that when i close the air with my finger so that fuel will come from the tank to the engine,after some seconds it goes back slowly .is this normal or do i have more problems ? when the engine is working its all fine.