My 2009 Vespa 150s had been running really rough and I figured it needed a tuneup since it has over25,000 miles on it. First I changed the spark plug and when I did I noticed the spark plug wire was cracked. I bought a new coil wire combo for about $15 and replaced it. Easyest job ever just had to remove the one screw that held it in swap out the spark plug cap and screw it back in.The scooter runs like brand new.