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Old 04-08-2000, 12:21 AM
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Join Date: Apr 2000
Posts: 117
I just bought a 1984 280GE LWB, overall in great condition, but with a few problems that I'd like to fix -- one of which is that the rear window washer doesn't squirt. When I push the button, I hear the pump (in the engine bay) working, but nothing comes out. I've made sure the nozzle is clear; the reservoir is also full (the front window washer works fine, as does the headlight washers). There is no sign of any leaks, either.
Any suggestions where to look? how to find the hose's route through the chassis? or how to gain access to the pumps to check their output? Thanks.

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Old 04-08-2000, 01:44 AM
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Join Date: Jan 2000
Location: New Bedford, MA USA
Posts: 1,583
Pull the rear feed hose off of the pump and actuate it. If you get a squirt then the pump is OK. Believe the pump is located at base of resevoir. Another thing to try is blowing some air through the hose from the pump end and getting someone to listen at the rear. If the passage of air can be detected, then the line is at least partially open. Get a small hand operated vacuum pump, connect it to the pump end of the hose and have someone occlude the washer end. Try to establish a low level vacuum and see if it holds. If it does then you probably have no leaks. If not, then there is probably a hole somewhere. Most of the time these hoses are routed along a channel in the body or along a frame rail and up the rear pillar. You'll have to try and follow it from the engine compartment to where it is no longer visible which may tell you intuitively where it is routed. Good luck..

Jeff L
1987 300e
1989 300e
1987 BMW 325

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