I have the Ryobi BP42 back pack blower and when I press the primer bulb it does not fill up with the gas/oil mix. I have checked the air filter (and yes it does look dirty), ordered a new one and have removed the hoses from the gas tank. If I press the primer bulb, the hose connected to it does suck in air.
The second hose that connects to the carburetor, I have also disconnected and cleaned and am able to blow through it so I know there is no blockage in that hose either.
I reconnected all parts, and when I press the primer button still the bulb does not fill with the mix. I can press in the bulb and it sinks in, and then slowly pops back out just as it should, but there is no flow of gas/oil coming to the bulb.
What could be causing this issue?