How can I remove the (hood mounted )windscreen washer nozzle?

It is apparent you used city tap water in the windshield wiper fluid reservoir. You not supposed to as the minerals that seal the pipes will cause the passageways inside the nozzles to clog up. They are three techniques to restore function: 1) use a long pin or sewing needle that will easily fit into the holes on the nozzle and push in to remove the minerals... exercise the windscreen cleaning pump to flush out the minerals and it may work for you. 2) remove the nozzles... this usually means removing the wiper arms and the grill panel under the windscreen to access them. Disconnect and soak them overnight in white vinegar. This will dissolve the moneral deposits. Flush with water thoroughly to ensure water will flow through them before reinstalling. 3) since you already have the access panel off, and the nozzles are still clogged, buy replacement nozzles and replace them. Don't use city tap water any more or it you do, add plenty of windscreen washer cleaner... it is treated to help prevent mineral build-up. (Do check the T connector for the nozzles to assure a line hasn't popped off first.) Replacement T connector and new wiper hose is available at most large chain auto parts stores.

Be carefull remove the w washer hose on nozzle they break easy try heating that little hose a bit its easyer to remove after you did remove spray air from the outside on the nozzle on the hood or bonnet for u debrie will come out make sure its clean reinstall
And try it

Most likely the pump (motor) is gone and needs replacement. However, it is worth checking that fuse allocated to windscreen washer is intact. Furthermore, you may also need to check the wiring for flow of current at lever end (handle on the steering wheel) and wires connecting to pump on the water reservoir.

Do you hear the pump working like it's trying to work? If so, then it is likely that your washer nozzles are clogged or the tubes to the washer nozzles are clogged. Try: http://www.videojug.com/film/how-to-clean-windscreen-washer-jets

and:
http://forums.audiworld.com/showthread.php?t=30886

There is a very good possibility that the nozzeles are plugged with "debris". Try using compressed air to force the "debris" out of the nozzles. This is best done by removing the lines going to the nozzles and and blowing the compressed air through the nozzles from the directon in wich they are intended to spray. A toothpick or metal pick may work as well to loosen the "debris" depending on the size of the nozzle.

hood mounted you remove the insulator pad from the hood pull off the hose then push the back sides together cowl mounted remove the wiper arms then the mounting hardware then pull it off and pull off the hose then push in the back sides to release it

If the pump runs then the nozzles are blocked. Use a pin or needle to clear the blockage from the nozzle.(Stick it in the little hole pointed at the windscreen.) Be careful not to break the pin off in the nozzle.
See if you are able to pull the pipes off from the underside of the nozzles. Clear the nozzle using the pin. Then point the pipe into the underside of the nozzle and activate the washer in order to rinse the nozzle.

Remove the windshield washer reservoir and give it a good cleaning with a mixture of 1 part bleach and 3 parts water. You may be able to clean it without removing the reservoir by flushing it throughly and the cleaning it while still on the vehicle with the bleach mix. After it is throughly cleaned put a bleach mix in the reservoir and disconnect the hoses from the spray nozzles and run the washer until the hoses are clean. Use a needle to clean out the nozzles, and the connect the hoses and run the washer until the nozzles are clear. Remove the bleach mix and then fill the reservoir with a commercial windshield washer fluid. I recommend Rain X.

Go on the reverse side of the surface of where the nozzles are mounted,and remove retaining clip,or it will be a split plastic spread that you need to compress to be able to pull nozzle threw the hole it is mounted in.On the rear hatch ,remove the inner hatch panel to gain access to the back side of the nozzle.On the hood it will just be on the back side of the hood.Some of the hood type turn to come out.If it is in the tray,under the wiper arms,then remove the wiper arms,and the tray.I hope this was helpful,if so,please let us know,thank you.

The windscreen washer pump could be weak or there could some kind of obstruction to the system,try to ***** the nozzles with a needle while someone operates the windscreen washer switch.