I have a 25 gal. ATV rack mounted sprayer with a Shurflo 12 volt pump. It no longer seems to be creating any suction. I was wondering what the problem would be, what parts are necessary and where to get them. The motor runs fine and nothing seems to be clogged. Thanks for your comments.

 

I have the same setup you have.Did you check the screen on the suction side of the pump?That is the first thing I would check,the little screen they use is really fine and it doesnt take much to plug it up.Hope this helps ya.

 

Ours does this every spring and when we leave it unused too long. It just loses prime. There are 2 ways I found to remedy this.
1: Take the screen off the intake side, then blow a little air (maybe 10 PSI or so) through the pump, then IMMEDIATELY stick the intake hose into clean water (have the spray wand valve open when you do this). If you have a small enough hose, using water is even better if you have a way to get enough pressure to the pump to break the vapor lock. Wrapping the intake with a rag and holding a garden hose to it works well, but gets you wet.

2: My dad came upon this technique. If there is any liquid left in the wand, he opens the valve, and swings the wand around as fast as he can, and the liquid coming out will create enough vacuum to usually prime the pump.

We got a second sprayer, and they went from a Shurflow to a Flowjet pump, and the Flowjet seems to be the way to go as it always seems to be self-priming. A neighbor had the same experince. Just be sure to get the smaller-bodied pump with the cooling fins on the outer motor housing. It is much improved over the older smooth round one. That is what we will put on the older sprayer when the Shurflow finally gives up the ghost. It is a good, durable pump, but is a pain in the rear to get primed.

 

Thanks for the suggestions on the sprayer pump. I replaced the screen and took the garden hose to the intake on the pump. Tried that quite awhile before it started to gain some pressure. So it seems it probably did just lose it's prime. It really surprised me 'cuz I've had it six years and I've never had this happen. Thanks again!!