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MG MGF Technical - low pressure washer jets

Hi,
Has anyone had any problem with the windscreen low pressure washer jets? only my right pair of jets (bonnet) releases water, but the pressure is so low that the water only reaches the low part of the screen. Any ideas !?

The water level is high and the electric pump is working properly (at least I heard the normal noise)

Thanks

Joao

(98 1.8i brg)


Joao Barros Gomes

I had a similar problem a few years back with my MGF. I removed the one way valve in the washer jet line and replaced it with a small piece of metal tube. The difference was startling.

HTH

Bruce
Bruce Caldwell

Or..... do as I did... remove the one way valve, prise it apart, clean out ALL the gunk and stick it back together. Also remove the rubber pipes and force some clean water through them. ie fill mouth with clean water and force it through the pipe.


A remarkable improvement, it won't make the car go any faster though :0).

Tim
Tim

Bruce,
Why was a one way valve fitted in the first place if they work better without it?
Cheers
Chris
Chris

Probably to stop the water draining back into the bottle and thereby increasing reaction time - all piping has to be filled before the screen can be sprayed. Could be a problem when a 16 wheeler has just covered the screen in ordure.
JohnP

Pull off the pump from the plastic can at first. It's just push fit mounted into a rubber ring. Look for blockage, dirt etc.
http://www.mgfcar.de/sales/Dcp_3621.jpg

If the pump gives enough pressure without connected hose, then go for the none return valve job.

Dieter K.

Chris,

<<Why was a one way valve fitted in the first place if they work better without it?>>

Search me. The reaction time is marginally longer but has never been a problem to me. In some cars with longer runs of tubing from the reservoir I can imagine it will be a problem but the MGF ha such a short run.

When I first had the problem I fitted a new valve to start with but the pressure was much the same so I diched the valve.

Bruce
Bruce Caldwell

Should read 'ditched the valve'. Sorry
Bruce Caldwell

The reaction time is much greater without it (one or two seconds!)- but at least the washer jets don't freeze in the winter.
Will Munns

Will,
Are you saying the washers don't freeze up if the one-way valve is removed under normal frosty conditions. Sounds a good plus.
Chris
Chris

well largely.

The alcohol evaportes and the water freezes in the jets, but if the water drains back then there is nothing left to freeze - unless other water freezes on the bonnet (note not the same as snow which freezes in the air!)
Will Munns

Well, the first thing that I already tried was remove the one-way valve, but I don’t notice great improvement. This weekend I gone try to remove the plastic container that seams to be a little muddy and remove the rubber ring.

Anyway, the one-way valve was gone! I am little worry about frost here in Portugal :)

Thanks

Joao
Joao Barros Gomes

Also make sure the pipe is not being trapped when you shut the bonnet!

Bruce
Bruce Caldwell

This happened to me the other day. Kinked the hose with anything placed into the bonnet.
Dieter K.

This thread was discussed between 11/08/2004 and 13/08/2004

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