How to test fuel pump?

[exjake]

I have a 1999 venture 500 and the fuel pump seems bad. I have plenty of compression, pulse from the block to the pump, gas flowes to the pump, but no gas to the carbs. New pumps from Yamaha are $85. Is there a way to test or rebuild? Has anyone had this problem?

 

[daman]

what leads you to beleive that it's bad? what are you seeing?

 

[88 yamaha 570]

pull the hoses off the carbs, and turn the engine over,which will create flow, and see if gas flows through the hoses, if so its fine, if not and gas is still going to the pump, faulty pump...