longjia lj50qt-3m how to derestrict

[graham063]

Does anyone know how to derestrict a longjia lj50qt-3m As I got it today it's a 14 plate and done 122km it's a nice bike but when it gets to 30mph it pulls back on the engine and when I go down hill it pulls back more so it does not go over 30 can anyone help me out please

[Elektrey]

it sounds like your restricted by CDI if it won't go over 30 going downhill.

I would suggest getting an unlimited CDI, though I am not sure which one would work. What engine code is it? You can find this code printed on the engine case somewhere.

maybe one of the 3 on this page would work, i'm not sure: www.scrappydogscooters.com/139QMB_50cc_Performance.html

Welcome! and btw thats a very nice looking scoot, just looked it up.

[90GTVert]

I'd prob just buy a stock replacement CDI. If this is a 139QMB you can get them super cheap (example below). As the linked listing says, if your CDI is much larger than you may have a DC CDI, but most are AC.

www.ebay.com/itm/Gy6-50cc-60cc-80cc-125cc-150cc-AC-CDI-Moped-ATV-Scooter-Taotao-Peace-JCL-Roketa-/150390716721?hash=item2303fc3931&vxp=mtr