The window washing stopped working my 87 300D. It worked intermittently right after I bought the car and stopped about six months ago. I checked the fuses and there is plenty of fluid. If the system is clogged, what is the best/easiest way to fix it?

Do you hear the pump motor working when you activate the system?

For these problems, I usually just try to bracket the problem by disconnecting the system at different locations until I've found the blockage. Meanwhile, flush out the reservoir - and perhaps all the lines (reverse flush) - to remove any other crud that may be in the system. I've seen some nasty systems where it looks like something blue gelled in the reservoir.

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95 E320 Cabriolet, 169K

I've used a sewing needle to clean out the nozzles. be aware that the nozzles pivot in the housings to align the spray to the glass. I agree with prior post, clean out the tank, verify the pump works (has voltage) pull hoses and engage the washers to verify no blockage.

Sometimes the pumps die; mine was about $30 for a new one.

They were the little black cylinders that set in the washer reservoir on my 300TE at least

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Bob Roe
Lehigh Valley PA USA
1973 Olds 88, 1972 MB 280SE, 1978 Datsun 280Z, 1971 Ford T-Bird, 1972 Olds 88, 1983 Nissan Sentra, 1985 Sentra, 1973 230.6, 1990 Acura Integra, 1991 Volvo 940GLE wagon, 1983 300SD, 1984 300SD, 1995 Subaru Legacy L wagon, 2002 Mountaineer, 1991 300TE wagon, 2008 Murano, 2007 R320CDI 4Matic 52K, some Hyundai, 2008 BMW 535xi wagon, all gone... currently
2007 Honda Odyssey Touring, 2014 E350 4matic

If you remove or replace the pump(s), change the rubber grommet that the pump slides into. They will quite often start to leak if disturbed. Cheap from the dealer.

Thanks for the help. I was playing around with the system and realized that it appeared to work if the head lights are on. There are two pumps, one for the head lamps and one for the windshield. It puzzles me. . . If one pump was not working, both would not work when the lights are on. I'd expect that the washing fluid would only come out of the lamp wipers since nothing happens when the lights are off.