I bought a '99 Honda CBR600 F4 back in 8th of this month. And there's a little maintenance issues that needs to be done. For example, replacing the front tire and changing the oil. Also when the speed drops below 20 mph, the front brake fades in and out, it grabs and then it lets go every 1/2 second.
Anyway, my question is I'm not sure why, but the bike is really burning a lot of gas. Most of my riding is in town with few traffic stops, so far haven't done any freeway riding with the CBR. Mostly I stay in 3rd or 4th gear, and sometimes 5th for few minutes on long stretch of road. Mostly I let the bike cruise at 5-6K rpm and occasionally let it fall at 4K rpm during braking. When accelerating, I don't usually take it above 8K rpm, mostly run it at 7K rpm before shifting up.
So with all that said, I'm getting 80-90 miles out of 3.7 gallons of gas before it hits the reserve, that's about 21-24 mpg.
The bike itself seems to run fine, carburetes well, no hesitation on starting it up. Once I notice white smoke coming out of it when it was cold and gave it some throttle. But that's about it, I never need to use the chole to start it up. There's no hesitation in any of the gears or rpm, and it pulls quite smoothly.
The rear tire is practically new, and like I said, the front tire needs to be replaced, it's pretty bald.
The bike seems stock, no aftermarket stuff, even the OEM license fenders is still there.
So I'm just scratching my head about what could it be? I get even better gas mileage on the SV and my car.
Here are few pics: