I'm only getting 50MPG Help!!!!!!!

[darwin]

Good point large my tank is only 1.33 litres I think, at 3.89 a gallon it cost 1.33 [coincidence] to fill up and Ive driven 40 miles and its still looks 2/3 full. LOL

 

[pabickwermert]

yea, what large said.

Yote,not to sound like an #$%^% but are you getting 50 miles per tank? Because a tank is a half a gallon. If you are then you're actually getting 100 miles per gallon

Yea, what large said.

 

[Simon_A]

Yup.. check the spark plug color. But it's prolly something to do with your carb. Air leak, perhaps??

Would not an air leak lead to leaning out of the mixture? The OP has a problem with too much fuels use.

 

[sparky]

Not necessarily. I cracked the insulator (spacer between carb & engine port) on my bike, and it completely messed up the vacuum that carbs must have to run properly.

Before, it ran great... the little 33cc engine got 30mph on only 20" wheels. After I cracked the insulator, I could only get 25mph tops. If I went over 25, the engine started to bog.

 

[Simon_A]

Hmmm generally that would cause a leaning out condition. I never thought about it from that angle. The disruption of the vacuum would cause poor atomisation of the fuel.