Washer Jets

[Deleted member 93371]

Not sure if this is standard but are the washer jets slow on every leon? I pull the stalk expecting water to come out straight away but I end up waiting about 4 seconds not had this issue in any car so just checking if it's meant to be like that or something I need to sort.

 

[mike0105]

Not sure if this is standard but are the washer jets slow on every leon? I pull the stalk expecting water to come out straight away but I end up waiting about 4 seconds not had this issue in any car so just checking if it's meant to be like that or something I need to sort.

Mine is the same, as though it builds up pressure first. The same on our old mk5 golf if I remember, so is normal for the car.

 

[Speed-FReek]

Mine are pretty much instant. Maybe a second or two delay but nothing more than that. I'm not sure about the Leon without checking the parts catalogue (no access to it at the moment) but most cars have a non-return valve in the washer pipe that prevents the water draining back out of the pipe into the tank after the washer motor stops.

Assuming that the Leon does have an NR valve in the washer pipe then it sounds like yours could be faulty (stuck open) which would explain the reason why it takes so long for water to initially come out of the jets (with a faulty NR valve it would first have to fill the pipe which can take some time).

 

[Deleted member 93371]

Interesting, that sounds about right, can't find anywhere online about were to find it to check for it.

http://www.ebay.co.uk/itm/1x-Genuin...arts_Vehicles_CarParts_SM&hash=item4d0ace1e5a

is this basically all I need? looks like just need to cut the pipe and put this in somewhere?

 

[Speed-FReek]

It's probably already got one fitted somewhere in the pipe that would just need replacing (which would mean no pipe cutting required). If you can wait until I get home from work I can check the parts catalogue later on. Unless someone else already knows off the top of their head.

If a NR valve was fitted from the factory then I would be inclined to get an original SEAT one rather than one of those generic ACP ones.

 

[Daniel M]

Mine aren't instant but 1-2 seconds usually. Not something that bothers me really.

 

[Deleted member 93371]

It's probably already got one fitted somewhere in the pipe that would just need replacing (which would mean no pipe cutting required). If you can wait until I get home from work I can check the parts catalogue later on. Unless someone else already knows off the top of their head.

If a NR valve was fitted from the factory then I would be inclined to get an original SEAT one rather than one of those generic ACP ones.

That would be great cheers thanks very much

 

[Deleted member 93371]

Mine aren't instant but 1-2 seconds usually. Not something that bothers me really.

I would be fine with that as well but my wipers start going before the water is even out and it gets annoying lol

 

[mike0105]

I would be fine with that as well but my wipers start going before the water is even out and it gets annoying lol

Yeah that is a bit longer than I have, so it may be that yours is faulty, sorry for misleading you!

 

[Richoscos]

My wipers sometimes start going before the water appears as well, this only happens occasionally though. It's kinda like S3x Panther: 60% of the time, the water appears before the wipers wipe, every time.

 

[Speed-FReek]

That would be great cheers thanks very much

The non-return valve is number 23 in the following diagram...

SEAT call it a "Pressure Valve" but that's the same thing as a non-return valve - there is a ball and spring inside that only opens when water pressure is applied in one direction. It will be under the black plastic scuttle panel on top of the bonnet so if you remove that you should be able to get access to it.

The SEAT part number for 23 is 5P0955481. According to the parts catalogue it's about £7.50 but for an accurate price go to the Sere Motors section on here and post a message for Dave...

http://www.seatcupra.net/forums/forumdisplay.php?f=249​

 

[Deleted member 93371]

thanks very much mate much appreciated

 

[Speed-FReek]

Before you go spending a tenner on a new one, it might be worth checking your one by taking it off and trying to blow through each end. You should only be able to blow in the direction of the arrow. If blowing from the arrow head end the valve should shut and stop the air flow.

I'm not entirely sure why SEAT have put the non-return valve between the two washer jets TBH. IMO it would be better placed between pipe 16 & pipe 17, or between pipe 16 an T-junction 19. Then it would be serving both washer jets. As the current design stands, it will be preventing water draining back from the jet in the right of that picture, but not from the jet on the left because air can still bleed in through the nozzles of that left jet allowing water in the pipe to drain back down into the tank due to lack of a NR valve. With the NR valve in the pipe for the right jet, that won't happen.

If your your number 23 NR valve does appear to be working fine, try putting an additional NR valve in one of the two places mentioned in my previous paragraph. You will need to measure the pipe diameter to see if another original SEAT one would fit or if you would have to get an appropriate aftermarket one instead like the ACP one you previously linked to.

 

[kazand]

Before you go spending a tenner on a new one, it might be worth checking your one by taking it off and trying to blow through each end. You should only be able to blow in the direction of the arrow. If blowing from the arrow head end the valve should shut and stop the air flow.

I'm not entirely sure why SEAT have put the non-return valve between the two washer jets TBH. IMO it would be better placed between pipe 16 & pipe 17, or between pipe 16 an T-junction 19. Then it would be serving both washer jets. As the current design stands, it will be preventing water draining back from the jet in the right of that picture, but not from the jet on the left because air can still bleed in through the nozzles of that left jet allowing water in the pipe to drain back down into the tank due to lack of a NR valve. With the NR valve in the pipe for the right jet, that won't happen.

If your your number 23 NR valve does appear to be working fine, try putting an additional NR valve in one of the two places mentioned in my previous paragraph. You will need to measure the pipe diameter to see if another original SEAT one would fit or if you would have to get an appropriate aftermarket one instead like the ACP one you previously linked to.

Is it positioned there to ensure equal pressure over both jets ? I would have thought that the pump itself would act as an NRV, in the absence of anything in the line to the first nozzle, and the valve is there to ensure the pressure is adequate on jet 1 before supplying jet 2.

 

[Speed-FReek]

Is it positioned there to ensure equal pressure over both jets ? I would have thought that the pump itself would act as an NRV, in the absence of anything in the line to the first nozzle, and the valve is there to ensure the pressure is adequate on jet 1 before supplying jet 2.

I'm not really sure how it's set up / designed to work on the Leon TBH. My experience of working on other cars is a single NR valve in the pipe before both jets. If the Leon has an NR valve built into the pump itself then you're right that another valve further up the pipe shouldn't be needed. If there is a valve in the pump then maybe that has failed on the OP's car.

 

[Dopedpanda]

Purchase a 1 way valve, put it in instead of number 17 on the diagram. Simple as that.

Even though if you change it all, it still sucks, the pump is so slow to build up pressure cause of the mist type sprayers. It needs that second 1 way valve, even though its not intented that way. Pretty sure the pump doesn´t have a 1 way valve, if you take off the pump it certainly drops all the fluid in the lines out of it anyway.

 

[Deleted member 93371]

I will need to take a video and get people to compare it with their own, it's just my previous cars and other cars I have driven there is no waiting time so it mite just be something I need to get used to.

 

[Deleted member 93371]

Here's a video for people to see and compare

[URL=http://i60.photobucket.com/albums/h2/callum929/IMG_2828.mp4] [/URL]

 

[mike0105]

Nah that isn't right I'm afraid, mine sprays before the wipers move, maybe a second or 2 delay at most.

 

[Deleted member 93371]

Yeah didn't think it was right