My washers got blocked up too, I removed them and squirted, loads of water came shooting out so I knew it wasn't the pipe, so i removed the jets and attached them to my air compressor, gave them both a shot of air at 130psi and that seemed to clear them :grinning:
Only trouble is, one of them has since blocked again, I think theres lots of dirt at the bottom of my washer bottle, the previous owner had lost the cap. I've got one on there now, so hopefully they'll stop clogging.