Scooterotica

coming home with son on back doing about 50mph when it suddenly cut out as if it nipped up or ran out of petrol i grabbed the clutch it then back fired i let the clutch back out and carried on running when i got home i checked for any oil leaks but everything was ok ,i`m now loosing confidence with the reliability of the engine and wondering if i should put it back to standerd

that sounds to me as it may be an electric/ignition prob...possibly spark plug whiskering up /or plug cap jumping off..

hi sean sorry but what do you mean by plug whiskering up

just put a new plug in and make sure the plug cap is a tight fit..and maybe check all ignition connections...
and then go for a blast out on your own...
i quite suspect that although you have got a stage 4 tune ,you are really not in need of this as you seem to spend most of your riding time twos up with your son on the back and probably going understandably steady away...and hence maybe why the plug has fouled up..
if you have say a NGK b 8 in now ,maybe try a 7.
ps sorry i didnt get back to you as regards the scoot rs pipe...but i looked around ,and no one seems to have one in stock..

thanks sean i`ll have a check on the plug but i seem to think i`ve got an 7 in at the moment

Possible fuel starvation?

Fuel low in tank? Needing a little more throttle due to son on the back?

Mine used to do that getting close to full throttle under load ie up hill , I changed to a fast flow tap and been fine since.

thanks dazza ive just come back from garage to check on plug type its a champion no3 will pick up ngkb8 + a b7 on monday,ive got a fast flow tap fitted,and thanks sean for trying to find us a scoot rs exhaust looks like i`ll have to import one in unless anybody as got one for sale