Thank you I'll try that as soon as it stops raining (of course it starts to rain when I want to work on my bike). Say what year is your bike it looks clean.Can try letting it gravity feed until it drips or squeezing lever then before letting off, block the hole with your finger. Squeeze again, blocking the outlet each time before letting off the lever. Once you let off the lever you can take your finger off of the outlet side. Repeat this way several times until it works.