BMS250 missing under moderate load By nicpaige (Read 511 times)

[nicpaige]

Two to three times now either with a passenger or not while going up a long hill or into a strong headwind my scooter starts losing mph and missing. Roll out of the gas a little bit and it clears up. If you continue without letting off the gas it will eventually sputter and die. Wait 5 seconds re-start and all seems fine until the next long hill. This only happens above 50mph. I have changed the plug, cleaned air filter, made sure of gas delivery. It almost seems as if the carb is running out of fuel under that much load and throttle? I have also read that a cdi or coil could cause this? Ideas?

[richardthescooter3]

I had the same experience and it was my igintion coil, check something first, sometimes it will happen if your clamps holding carb are loose, intake and back to your air box and (that happened to me the other day, act just like I wasn't getting gas to carb, got checking, it was those clamps, tighten them good to go) of course check those vacuum lines too