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Mine got weird on just one side, so I took a can of compressed air (the keyboard cleaner stuff) and sprayed a few hits into the nozzle and it fixed it.
If both sides have gone down, if it's been gradually I'd think the pump, if it's suddenly you might want to check for a leak. Nothing to lose from trying to clean it out though....
Check the hose path. I noticed my washer worked fine when the hood was raised but was anemic when the hood was down. Dealer found the hose had come out of a guide which allowed it to be pinched.
I removed the connector for the washer, up by the firewall and blew air through the nozzles.
Didn't help. I blew air from there, on down to the container, then reconnected and still very low pressure at the nozzle.
The flow at the connection before the firewall seems OK.
I'll get some new nozzles and hook one to the front hose and see if that works.
If it does, I'll have to tear the nozzles and hoses out.
New nozzles from a Ford dealer, $17.54
Six feet of hose from O'Reilly auto parts, $3.99.
Way too many hours to do the job.
It would help, if I was 6' 8". with 48 inch arms, to R&R the Christmas trees.