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Old 12-13-2016, 04:56 AM   #1 (permalink)
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Poor FE from 150cc gy6 scooter rejetting?

Recently got a Chinese scooter to cut back on my car driving. Payed about 100 usd for it converted. Only issue is outstanding licence its about 3 years behind but it's in every day use.

Im not too impressed with the FE. Im averaging 4.5L/100km or 52mpg my best being 57mpg. See picture of attached log on a fuel app i got.

The drive to work is mostly highway riding about 10 miles each way and city driving about 3 miles. Throttle wide open it maxes at around 55mph but i keep the speed around 45mph. Just don't understand how for a 150cc it is so poor.

Any ideas how to improve this? I recently serviced it and my brother had a look at the spark plug and said it's running way too rich. I'm not too clued up but i know i can play around with the jets. Im at sea level in a warm climate. Standard jet i read up is a 107mm will re jetting to a smaller say around 103 work? Or even smaller. Or is that just what is to be expected from these scooters?

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