| Author | Message | ||
     Raymondt |
My bike is a 04XB12S. So I think, or thought I put in some bad gas, and drained the tank and treated the fuel for water. It is running better, but will not take immediate full throttle. It seems to run out of gas and dies until the fuel pump can catch up, then starts running again. Is there such a thing as partial fuel pump failure, or do I have gunk clogging a fuel filter not letting the pump keep up? I have not looked at the manual yet but I assume there is a filter buried in the pump. Is that the only filter? If I have to replace the pump how much can I expect to spend? Guys, any help, words of wisdom would be appreciated. Spatten1 and I may have a project! Thanks: Ray | ||
| Moosestang |
Usually there is only a bag/sock on the inlet for the fuel pump and then there's a fuel filter between the pump and fuel injectors. This is in automotive applications though. There must be a filter before the fuel injectors. | ||
| Mr2shim |
There is a filter on the pump. I just looked in the service manual. I've never noticed a filter between the pump and the injectors. As far as replacing the pump and the price, best thing is just to call your local HD/Buell dealer in the morning. Make sure to have tissues next to you when they tell you in case you cry.  (Message edited by mr2shim on July 28, 2008) | ||
| Mr2shim |
 I couldn't figure out how to add it to my existing post. Sorry about the gigantic size as well. | ||
| Raymondt |
When I started it up at work it did not want to take throttle at all but after a few minutes ran OK so I started for home. When I was a few miles from home I thought lets see if it will take full throttle, maybe it is ok now. It revved up to about 4800 and then cut out, at which point I barely was able to nurse it home! It starts and idles fine now but will not take any throttle at all before wanting to die. I read in the manual to check the fuel pressure, so I may rig something up to test that before breaking into the fuel pump and filters. Does anyone know if you really need the puller to get the pump out? Could this be something else. A ECM or a bad ignition relay. Man I am bummed that she is down. Please save me from the dealer if possible. Thanks guys | ||
| Lightningstrikes |
I just had my fuel pump out a few weeks ago for a wiring issue. My bike was doing something similar to where it did not want to go to full throttle kept bogging ad dying not wanting to run over 3000RPM. My problem was a broken ground wire to the fuel pump. I had to replace the entire wiring harness to the pump as the wire broke right at the gromet and was not repairable. You can remove the fuel pump with out the puller, I screwed one of the bolts into the hole and pulled on it with some pliers and the pump came out. I was able to remove the pump without removing the swingarm but I scratched the powder coating on the swingarm removing it because it's a extremely tight squeeze to remove it without removing the swingarm. You have to support the bike under the muffler and remove the rear shock bolt to let the swingarm drop to the stop and then rotate the fuel pump just right to squeeze it out and it rubs along the swingarm scratching it. Be sure if you do remove the fuel pump you will need a new set of o-rings for re-install. To avoid any damage and to do it right I would remove the swingarm, I was in a hurry to get it done and if I had to do it again and had more time I would have removed the swingarm. | ||
| Metalstorm |
Once the rear tire's off and the swingarm's drained, removing the swingarm takes 15-30 minutes. Rider peg brackets need to come off. They're fastened onto the frame by only three small screws each. (tie or zip tie the right side one up out of the way so it isn't dangling by the brake line). This gives you room to access the pump on the left side and access to the swingarm pivot shaft & pinch bolt(basically just like the axle shaft) on the right side. The shop manual does a pretty good job of directing the whole operation. I was impressed by Buell's thoughtfulness when I removed the oil lines from my swingarm I discovered (at least on my 05)that all three lines have different size fittings so it was bumbling idiot proof (that would be me) when it came time to reconnect them.  | ||
| Spatten1 |
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