tired out window washer nozels... DIY?

[SteveH]

Hey all;

I've got problems with the window washer nozzles; they don't want to work! I have a full tank of washer fluid, but when I push in the washer stalk to get the nozzles to spray fluid, I get one little weak burst from the right nozzle, then nothing.

Any advice on any DIY on how to address this issue?

1990 560 SEL.

Thanks in advance.

[Zulfiqar]

fine needle works nice to clean them out, washing them in hot water and dunking in citric acid also helps - may discolor them though.

[JamesDean]

Yes. Try cleaining them out ALSO look on the hood near the battery somewhere in that area there is a while plastic check valve that like to crack and go bad. When it does most of the wiper fluid just leaks out and goes down.

[SteveH]

thanks guys; does the pump get worn out so that it lacks pressure to push the fluid? If so, where might it be located? Also, as an aside, I was working on this today because I got the dummy light on the dash showing low fluid level. When I poured the washer fluid in the container, it was quite hot; steaming actually. I know it's got a warming coil in there, but dang, it was STEAMING! Is it supposed to get that hot?

Again, thanks.

[JamesDean]

The pump is located on the wiper fluid bottle. I think it can get worn out. I'm not really sure. Replacement pumps are only like $15-20

[Zulfiqar]

if you got the low fluid light and have low pressure too, check the grommets which secure the pump to the bottle, they rot out and cause leaks and the system not to work even with some fluid in it.

They cost about a dollar or so a piece.

Lift the pump straight out of the bottle and check the black rubber grommet in the hole of the bottle.

The heating coil has a thermostat assembly itself - the fluid temperature is usually maintained at 40 or 50*C. If the thermostat in it goes bad it will overheat the fluid and also sometimes boil it. You can bypass the system if you wish.

[SteveH]

great guys; thanks.