When I try and wash my rear window I can hear the motor trying to squirt the washer fluid, but nothing comes out.

The fronts are perfect.

Is there an obvious place where the feed splits from the washer fluid bottle? I'm guessing the most likely thing is that a pipe has been disconnected somewhere, but I don't know where to start looking...

TIA. Past (too many to list, but a few favs)...
2007 Porsche 997 C2S Coupe
2007 FFRR 4.2 S/C
2012 Jag XKR 5.0 S/C
2014 Merc SL500 AMG 4.7 V8 BiTurbo (remapped to 560BHP)
2011 FFRR 4.4 TDV8 Vogue SE - Overfinch Conversion
2012 Porsche Cayenne Turbo
2018 AMG C63S Estate
2015 Mercedes GLE63S
2017 Maserati Levante Diesel
2017 Audi A6 Avant 3.0 Black Edition

There is a non return valve in the rear system that goes faulty

Yup - sorry - didn't search properly first - have found a load of advice now - will see if I can break it in the morning...  Past (too many to list, but a few favs)...
2007 Porsche 997 C2S Coupe
2007 FFRR 4.2 S/C
2012 Jag XKR 5.0 S/C
2014 Merc SL500 AMG 4.7 V8 BiTurbo (remapped to 560BHP)
2011 FFRR 4.4 TDV8 Vogue SE - Overfinch Conversion
2012 Porsche Cayenne Turbo
2018 AMG C63S Estate
2015 Mercedes GLE63S
2017 Maserati Levante Diesel
2017 Audi A6 Avant 3.0 Black Edition

if i were you, i would undo the three screws that hold the rear spoiler on, lift the cap off the wiper arm and clean out the nozzles and inside the cap, before you go doing anything else. there can be a load of crud in there stopping the water from coming out.

always start easy and work up. Current: TDV8 (3.6) RRS HSE



Past: TDV8(4.4) Vogue
Discovery 3 Commercial
TDV8(3.6) Vogue
TD6 Vogue
D2 V8 ES
D1 V8 ES
RR Vogue Classic

stu wrote:

if i were you, i would undo the three screws that hold the rear spoiler on, lift the cap off the wiper arm and clean out the nozzles and inside the cap, before you go doing anything else. there can be a load of crud in there stopping the water from coming out.

always start easy and work up.

+1 Fist call is remove the cap and try it without the cap fitted...



Craig

Did mine the other week, disconnect the plastic valve, get an airline attached to blow out the gunk from both the valve & the pipe feed to rear washer. Have a bucket handy when you disconnect the valve, it it's anything like mine, loads of muck came out .

Good advice Craig and Stu.

Took off the spoiler easily. Took off the cap easily. Washer worked fine and sprayed me completely all over!

Got a safety pin and cleared out the tiny metal nozzles in the cap and put it back. Spent ages faffing about to get the spray angles right but all well now.

One of the easier jobs I have done and apart from a wet jumper no damage done by me for a change.

Cheers! 2012 5.0L S/C
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3.6 TDV8
4.4 HSE
P38 4.6 HSE
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Craig