Hey. I changed cylinder from 50 to 70ccm sport, 19mm carb, vario, clutch,belt and reeds. Scooter was working fine until I started to play with rev limiter (black box with two small switches for limiting rpms, wired to CDI). When I was setting up it stats to fire from exhaust and cuts off while riding with rev limiter ON. I bought new CDI, new spark plug, coil is working, fuel hose is okay, compression is ok, spark is ok,cleaned carb. But wont start anyway. Maybe for a few seconds and dies. What should I do? Thank you
