Another Windshield Washer Leak Thread

JStang · 09-23-2013, 07:04 AM

I have had a leak for a couple of years now and I finally felt productive enough to try and diagnose the issue. I took the fender liner out and saw the leak coming from the bottom of the pump. Do you think I need to replace the pump or just a seal.

JStang · 09-25-2013, 09:02 PM

Pulled the pump out this evening and found this crack which was causing the leak

pits200 · 10-01-2013, 06:52 PM

I think I'm having the same issue now, how much work was it to pull the tank?

JStang · 10-02-2013, 08:17 AM

Quote:

Originally Posted by pits200

I think I'm having the same issue now, how much work was it to pull the tank?

It shouldn't take more than a half hour start to finish.

shadow191 · 10-02-2013, 09:41 AM

I'm going to pull mine soon, have a very slow leak somewhere. Anything else need to come out other than the fender liner? I've never really looked closely at it.

Longboarder · 10-02-2013, 11:16 AM

This is pretty common issue. Happened to me a couple times when I was using the WW PWM water/meth kit.

Augster · 10-02-2013, 02:05 PM

Yep, common issue as it happened to me. Replaced the pump and all is good.

The only other place that might leak is at the filler tube connection. Mine started leaking after I disconnected and reconnected it. I re-cleaned the o-ring but that didn't resolve it. Tried replacing it with one from a generic o-ring kit, but the thickness of any similar diameter o-ring were too thick and prevented the filler tube from being able to seat into the tank. I ended up lubing the o-ring with a thick liquid hand-soap and after 5 months, it's still leak free. Otherwise, since the o-ring is not sold separately, a brand new filler tube would need to be ordered.

09-23-2013, 07:04 AM	#1
JStang Brigadier General 563 Rep 3,625 Posts Drives: FDB M3 CS Join Date: Dec 2010 Location: St. Petersburg, FL iTrader: (9)	Another Windshield Washer Leak Thread I have had a leak for a couple of years now and I finally felt productive enough to try and diagnose the issue. I took the fender liner out and saw the leak coming from the bottom of the pump. Do you think I need to replace the pump or just a seal.
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09-25-2013, 09:02 PM	#2
JStang Brigadier General 563 Rep 3,625 Posts Drives: FDB M3 CS Join Date: Dec 2010 Location: St. Petersburg, FL iTrader: (9)	Pulled the pump out this evening and found this crack which was causing the leak
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10-01-2013, 06:52 PM	#3
pits200 Colonel 548 Rep 2,590 Posts Drives: 09 335i X-Drive Black Sapphire Join Date: Mar 2010 Location: Pittsburgh iTrader: (1)	I think I'm having the same issue now, how much work was it to pull the tank?
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10-02-2013, 09:41 AM	#5
shadow191 Lieutenant Colonel 181 Rep 1,681 Posts Drives: 2017 Volvo XC90 R-Design Join Date: Dec 2012 Location: GA iTrader: (3)	I'm going to pull mine soon, have a very slow leak somewhere. Anything else need to come out other than the fender liner? I've never really looked closely at it.
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10-02-2013, 11:16 AM	#6
Longboarder Major General 3436 Rep 6,771 Posts Drives: 2016 BMW i8 Join Date: Dec 2006 Location: Monarch Beach iTrader: (1) Garage List 2012 BMW e92 M3 [0.00] 2021 BMW X5M [10.00] 2015 Porsche 991 Tu ... [10.00] 2015 Porsche 991 GT3 [10.00]	This is pretty common issue. Happened to me a couple times when I was using the WW PWM water/meth kit. __________________ Current BMWs: 2022 X5 40i, 2016 X5 50i 2015 Porsche 991 Turbo S 1979 Porsche 911 Turbo (930) a couple others IG: longboarder949; YouTube: https://www.youtube.com/channel/UCT1...eoFBszPIK0gf9w
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10-02-2013, 02:05 PM	#7
Augster Master Gunner 77 Rep 435 Posts Drives: 2008 335i Sport Join Date: Aug 2013 Location: Sandy Eggo iTrader: (0) Garage List 2008 BMW 335i [10.00] 1994 General Dynami ... [6.00]	Yep, common issue as it happened to me. Replaced the pump and all is good. The only other place that might leak is at the filler tube connection. Mine started leaking after I disconnected and reconnected it. I re-cleaned the o-ring but that didn't resolve it. Tried replacing it with one from a generic o-ring kit, but the thickness of any similar diameter o-ring were too thick and prevented the filler tube from being able to seat into the tank. I ended up lubing the o-ring with a thick liquid hand-soap and after 5 months, it's still leak free. Otherwise, since the o-ring is not sold separately, a brand new filler tube would need to be ordered.
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