| Author | Message | ||
     Xl_cheese |
I'm wondering if anyone else notices their bike running worse when the fuel tank starts getting low. Mine does with about 20-25 miles left in the tank. My bike is an 04 xb12s. I'm wondering if the newer models (06+) with revised fuel pumps have fixed this? Or maybe it's just an isolated case with my bike? I'm trying to narrow in on the fix. If I can fix this and the crappy shift from 1st to 2nd I'd love this bike. Seems easy enough, but 300 bux for a fuel pump isn't something I want to do unless I'm certian it will work. | ||
| Wantxbr |
Usually with the Harleys that kind of symptom is a hole or crack in the fuel pump hose. I have an 05 and it runs the same with or without a full tank. Ran it dry once and still ran the same except for the last hundred yards . | ||
| Bombardier |
Seems to run a lower pressure when fuel level is low due to the low level pressure sensor in the pump diagram. Would make sense to reduce flow/pressure as the return would tend to cause aeration near the pickup. Perhaps a length of tubing from the return hole in the regulator running up the frame/tank a little way to ensure all aeration has resolved by the time it flows to the pickup filter. | ||
| Od54 |
I ran mine out of gas just today. All I needed was another half mile  . It was running great until then. I managed to shake and swerve an extra mile out of it before it gave up. | ||
| Xl_cheese |
I ran mine out of gas just today. All I needed was another half mile . It was running great until then. I managed to shake and swerve an extra mile out of it before it gave up. What year is your bike? | ||
| Randomchaos |
I have an 04, and I can say my bike deffinately runs worse on an empty tank vs a full tank. On a full tank, there is very little surging, and great throttle response. after about 80-100 miles though, its starts to surge more, and throttle response goes to poo. As soon as I fill up, all is well again. I would try and check out the lines inside of the tank for any cracking or splitting, but to remove the fuel pump requires removal of the rear swingarm. F that! | ||
| Iamarchangel |
On an empty tank, my engine doesn't run at all. It's funny that way. Glad yours runs worse, at least it's running. Sorry. | ||
| V8basil |
I have a 03 and mine runs much worse on a near empty tank as well. You are not alone in this. Surges and stumbles when tank is low! Fill tank and runs great again. | ||
| Wantxbr |
Xl_cheese Wrote: What year is your bike? Od54 ha an 2003 XB9r It's in his profile. |
