Guys my bike cbr1000f is a 95 model with 18000 genuine miles. I am seeing just 21 miles to the gallen on 1st attempt. I just bought this bike few weeks ago . Of road at the minute waiting on a braded clutch line coming as the old one believe it or not had black insulation tape wrapped around where it was split I found out to my cost when I was out on it and it burst . What could be checked or replaced to get the mpg up a bit or what mpg are you guys getting . Thanks guys

 

I get about 48mpg normal riding. In the twisties maybe 35mpg.


If it were me, I'd check the valve clearance first. You may have some tight exhaust valves.

 

Running rich, choke not fully closed?

 

Thanks guys I pulled the plugs out last week after the first run and they where fine tan in color. Now today as I can't use bike with no clutch hose I started her up let he tick over while checking for any petrol drips from under carbs no a drop so any way after ticking over for good 15 minutes pulled plugs out check again now they are sooty not bad but sooty with engine ticking over . I guess it's running rich on tick over then . Does this mean carbs out ?. Or maybe air filter to double check it as I did have it out but looked OK but then again might be worth replacing .

 

Choke is working normal checked all the linkages there thanks for the advice on the choke. I am going to buy new air filter as I don't know how old this one in bike is and can't see inside it clearly to see how bad it is so it may be clogged .

 

Fitted new air filter today went out for ride got 46 mpg now so well happy with this. And that was about town . Just goes to show how much of a different a new air filter does . Thanks guys as always

 

Glad it was something simple.

 

Most of the time it is something simple. Thank you for your reply

 

cbrjohn, just noticed this slightly old thread but I'm interested in whether your "old" air filter was obviously dirty. I have a 1991 CBR1000F with 18000 and I'm looking for reasons why my mpg is a little on the low side at around 37mpg. My air filter after only 18000 looks pretty much like new. How was your's when you replaced it?