gilera runner problem

[giedrelis3]

hi a have a 50 cc gilera runner sp and the problem i get with it is that when i start it and drive it i can go on it diwn my road and then it just starts going slow like 5 mph and not faster i leave it off for a while then when i start it goes fast again for a little bit can you help me???

[custom-biker]

[Misc]

Might be the air filter. Have you put an after market filter on? Give it a check anyway.

[td007]

check the air filter i had this problem with my dna if it looks clean still clean it also check the pipe going to the ait box see if this is clogged up or not also the seal on the airbox see if its broke

[giedrelis3]

yh ill check that but could it be anything to do with the clutch cause i put polinni yellow springs in today

[Misc]

Was it running ok before you put the springs in?

[giedrelis3]

yh it was but it had slow start

[Misc]

Give the air filter a check/clean anyway, then try the old rollers again.