Struggling to start

[rodney]

Just fully rebuilt a li 150 and won’t seem to start. Have a good spark but won’t start, I have fully cleaned the carb out but it doesn’t seem like much fuel is getting through. What could this be ? Sorry this is the first rebuild I have done

[missing lynx]

Is the fuel flowing from the tap and is the float bowl filling ?

[coaster]

Choke on and throttle held closed, dont wring the throttle as it weakens the mixture

[Fast n Furious]

Do a compression check with a guage and tell us what psi you get on kick over.

[rodney]

Is the fuel flowing from the tap and is the float bowl filling ?

Yes fuel is flowing and bowl is filling

[HxPaul]

What is the carb?If it is a scootopia 22mm,I had one and the float was catching on the inside of the floatbowl(I had witness marks inside the floatbowl)I bought an original dellorto float and found that it was a tiny bit smaller but this worked and the scooter ran ok.

[MickYork]

Did you resolve the backfire issue ?