I have a 2002 honda vtx 1800 will not idle but loads with gas

Question edited for clarity.
Question moved from Cars and Trucks.

That isn't enough voltage. It starts using the momentum when the starter cut power.Put the battery on a full size battery charger overnight and try again. Take it to an Interstate Battery shop and ask them to test it. Takes 2 minutes on the bike and you get a print out..

1. Engine
   • The Honda VTX 1800 cruiser boasts a monstrous 1,795cc liquid-cooled V-twin engine, with three valves per cylinder and a nine-to-one compression ratio. It has a bore and stroke of 101 by 112 mm, making it an undersquare, or long-stroke motor, meaning it's tuned for low-end torque. With a curb weight of 800 pounds, you'll need all that low-RPM power to get off the line. The bike does not have a tachometer, so you'll have to shift the five-speed transmission by feel.
     
   Fuel System
   • The bike is fuel injected, with an automatic choke. Fuel injection helps the VTX 1800 ride more smoothly than carbureted V-twins. The tank carries 5.3 gallons of fuel. In reviews, the bike had an average range of 194 miles on a tank of gas.
     
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   Performance and Handling
   • This is a massive and massively powerful motorcycle. It corners wide, and is really meant for highway cruises rather than city riding. The bike gets a remarkable 100 foot-pounds of torque at 3,000 RPM. The suspension is rough, and you will certainly feel bumps in the road. Honda, however, has put a lot of effort into minimizing engine vibration, so the gigantic V-twin won't rattle your bones the way you expect it to. The engine makes a solid, satisfying thump without chattering your teeth.
     

Have you changed the oil lately? If there is to much oil in the motor the bike will push oil up into the airbox and foul the air filter out. This will cause the bike to run rich. check the oil level and then drain any excess out to the proper level. You will need to clean or replace the air filter in order to make the bike run well.
Steve

please change the air filter

sound like you just running low on fuel you probably dont have a problem at all don't let you fuel level run so low if it does that turn your fuel petcock to reserve and head for the nearest gas station.

Electrical ... check points. You jmight want to run some carb cleaner through it ... change the plugs. Id look at the points or what ever turns the coil on and off, real close.

Air leak. Check airbox seal

Your carb idle pins/needle valves are either fouled or worn/damaged. Or floats that control your equilibrium for gas distribution throughout the carb array are not working together with valves/pins. Has this bike set a spell, at least once for too long of an interval? I'd pull the whole darn carb setup and inspect/clean, then reinstall exactly to specs. Ask for the very best teardown/rebuild cleaner for carbs at the parts store! Betcha a little elbow grease and a perfect dismantle and clean, then rebuild is all you need! Been there----Did dat!

go ahead and run a full tank of 93 octain gas through it and when you get a chance open it up in each gear, it will clean what ever is in it out.

Freakville03