Primer Bulb

I have a small Weed Eater motor, around 20cc. When I prime it (or try to) the primer bulb doesnt seen to full up, and it doesnt pop back out. The primer line is free of any debris and is not clogged. I don't know whats going on

 

The only reasons it will not pop back is because of a clog. think of it like a straw if you plug one end and suck in it, it will collapse until you open one end. Or it could be that the bulb is just bad from old age or contamination.
Hope it helps, let us know what you find.

 

Disassemble the carb, but lay out the pieces in order so you don't 4get how to put it back together, use a blow gun, clean all that is possible, put back together and if it still don't work, your bulb may be old and not as flexable as when new. I have many weedeater motors, and had the same problem. Just clean clean clean and replace bulb if needed, and also make sure your fuel filter in the tank isn't clogged. Hope this helps

 

Okay, thanks. It must be a clog then because when I took the bulb off the carb it was fine, so it must be that one passage right behind the bulb.

 

Alrighty, I cleaned out the carb and I got it running. I soon noticed that it was as simple as a hole in the bulb. Not sure how I missed it but I finally know what it is.


Thanks all who helped

 

Glad to hear you found the issue.