fuel ball soft

[jjdluz]

what would u look first for 1992 yamaha 200txrq when first pump it up it get hard,after crank it up and run for a little,the prime fuel ball getting soft,but not real soft or flat,still firm but can be squeez it down,what will few things u will look at it first?thanks.

 

[Outsider]

Re: fuel ball soft

If it's the original bulb, change it on general principles. Trust me on this, even though it may seem "supple", bulbs frequently start to deteriorate from the inside, thus sending little grains of rubber to places they don't belong.

That being said, the bulb should be "hard" when pumped up, and it should be a little "soft" after the motor has been run. You create the internal pressure with the bulb by pushing fuel until it no longer has a place to go (and held by a check valve), and the fuel pump maintains the flow by pulling (which means steady flow but no pressure). Para #1 not withstanding, you're fine ...