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Ml320 (w163) Front window washer liquid doesn't work

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Old 03-23-2019, 07:42 PM
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Ml320 (w163) Front window washer liquid doesn't work

Hey everybody,

The front window washer liquid doesn't arrive. There's liquid, the sprinklers (holes) are clean, pump works (I hear the pump when I activate it), on rear window it works great, checked fuse as well. At first activation there's even small drops dripping out of sprinklers.
I don't really know what to check anymore...

Cheers, Den
Old 03-23-2019, 10:42 PM
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Originally Posted by Denadaen
Hey everybody,

The front window washer liquid doesn't arrive. There's liquid, the sprinklers (holes) are clean, pump works (I hear the pump when I activate it), on rear window it works great, checked fuse as well. At first activation there's even small drops dripping out of sprinklers.
I don't really know what to check anymore...

Cheers, Den
Did you check the lines themselves? (you didnt clarify and only mentioned the spray nozzles, I presume...)
Old 03-23-2019, 10:50 PM
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After I sent the message I actually found a post finally about a guy taking of the gril where the nozzles are and I didn't check this yet.
I did blow on one of the tubes that come start at the watertank and I didn't get to blow anything through. I thought there might be valves after that.
But I'm gonna check under the grill and disconnect over there if I get to take the grill off. Shouldn't be too complicated... 😁
Old 03-23-2019, 10:52 PM
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Just read about an eventual melted nozzle... But all of them melted is really too little of luck... 🤔
Old 03-24-2019, 06:48 AM
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So, right before the nozzles is this 'oneway' connector which was plugged. Didn't get to unplug it, so I drilled right through it.
It worked for a little while untill there was no more water....
Because on the watertank are 2 black, 10cm long things attached which are connected to the tank through a hole. There's a washer between the thing and the tank... 1 of these washer's leaking/not sealing anymore so water pours out...
So, New adventure:I have to find a new washer, well might as well change both of them while I'm at it....
Old 03-24-2019, 11:05 AM
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Originally Posted by Denadaen
So, right before the nozzles is this 'oneway' connector which was plugged. Didn't get to unplug it, so I drilled right through it.
It worked for a little while untill there was no more water....
Because on the watertank are 2 black, 10cm long things attached which are connected to the tank through a hole. There's a washer between the thing and the tank... 1 of these washer's leaking/not sealing anymore so water pours out...
So, New adventure:I have to find a new washer, well might as well change both of them while I'm at it....
You're talking about the check valve and the actual pumps for the two washing systems. Get to know the truck beyond "things" 😁
Old 03-24-2019, 11:13 AM
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Yes, thanks a lot, that's what I was looking for... Sorry, I didn't mean to be irrespectfull with my 'things'.
Do you happen to know where to find the washers for the pump to the tank?
Old 03-24-2019, 11:55 AM
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Originally Posted by Denadaen
Yes, thanks a lot, that's what I was looking for... Sorry, I didn't mean to be irrespectfull with my 'things'.
Do you happen to know where to find the washers for the pump to the tank?
Not a washer. It's a grommet.

https://www.autohausaz.com/catalog/k.../washer%20pump
Old 03-24-2019, 04:10 PM
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Thank you so much !
Only thing is that they charge me 56$ of postage for 3.26$ of grompets... À bit overdone...

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