Starting problem Piaggio 50cc NRG mc3 LC

[humphreys-j1]

Hi, my piagio 50cc will only start when cold if the throttle is wound wide open and the starter engaged for about 30seconds for 2 or 3 times. Auto choke ok, Auto petrol tap new, jetted up to 72 and needle altered 1 notch, new race can fitted, please help before starter wears out.

[GREENI3]

I assume you've tried to kick start it?

[humphreys-j1]

Yes until leg gets cramp.

[Nope.]

A 72 jet sounds far too high. Are you sure your not flooding it?

Do a plug chop. It could be that its running far too rich or it could just be that your plug's fowled. Look at it and change it. See if it makes a difference.
____________________
Former: Derbi GP1 50, Sachs XTC 125, Suzuki GSXR 400 GK73A, Kawasaki ZX7R, Suzuki DR250, Yamaha RD350
Current: 2011 Yamaha XT660Z Ténéré, 2003 Yamaha YZR-R1 5PW (In Build), 2009 Kawasaki ZZR1400

[Gamble]

As computid says 72 sounds like a far too large jet size as I believe these run a 56 standard? If it's only running the exhaust you only need to increase around 10%.

[Nope.]

[humphreys-j1]

Cheers for that, I will change jetting, would I have to put the needle back to original position. Where can I get a single 62 or slightly higher jet from, I don't really want to buy a jet pack with loads of jets.

[Gamble]