is the pump in the tank? also does the pump have a relay and or fuse? if so i would check both of those first make sure they haven't gone bad. check the wiring to the pump make sure you have power and ground. if it has a safety feature like lets say if the bike is in gear on the kickstand it won't turn on the pump. if it has something like that make sure you aren't causing that to trip and if you aren't make sure that its not activating when it shouldn't i would start with all those before think i need a new fuel pump.

 

Micro fiche looks like the fuel pump is not in the fuel tank on your model, could be the fuel pump. I assume you don't have a shop manual, I would also assume you should be able to take a test light and check voltage at the pump when you turn on the key. I would check before buying a pump and go from there. Good luck

 

Solved the problem. I tore the bike apart and got to the fuel pump/filter assembly (stored right in front of the battery box, which is a pain to remove in and of itself). I took the pump off and hooked up the leads directly to a battery, at which point it ran, so it wasn't getting power when installed, evidently. I believe the pump is on its way out (I'll test it more this weekend) because months ago the bike took a long time to warm up and would cut out fairly frequently. I had read on VTX forums of a handful of people who have had their pump die and, not wanting to spend $100 on a new one, I was looking for a way around it.

I decided to run a line directly from the petcock to the carb. I spliced some fuel lines that I had removed and added the inline filter, and now it runs great. The only trick is that, since my petcock doesn't have a vacuum line, I need to shut off the fuel whenever I park the bike. This could be resolved by buying a newer VTX petcock which does have a vacuum line but until then, I'm fine with just shutting off the fuel manually.

 

You shouldn't have to shut the fuel off as long as your float valves are working correctly. The fuel pump is not there to stop the flow of fuel only pump it.

 

Fuel pump and filters acts as an air gap stopping flow on mine, no vacuum petcock. The float valve is not intended to hold a full tank of GRAVITY fed fuel back. So since the OP is gravity feeding the carbs he needs to shut off the valve or his gas will drain overnight.

 

Fuel pump and filters acts as an air gap stopping flow on mine...

If you're using any type of a diaphragm style pump....no it doesn't. Gas will run right thru such a pump, and the filter doesn't stop gravity flow either. I've seen it happen...

The only way what you say would be true, is if there was a place in the fuel line between the pump and the carbs that is higher than the level of the liquid in gas tank. And even then it's possible that once a siphon started, it would continue.

Physics. Some laws can't be broken.