Do you know if I can get a new WUR as I think mine is shot, or are there any electronic replacement options (seen some stuff on some US websites) My fuel tank was full of crap and the filter eventually gave up and filled the system with crap. I took it to a garage in Glasgow and they diagnosed this as causing my cold start problem and cleaned it all out at a cost of 500 for labour, new injectors and filter. Everything was full of dirt and they took apart the wur to clean it. Anyway I'm gutted because it now has a rough idle, is down on power and still has the cold start issue when it was smooth and sweet before. So in my attempt to save money by getting the problem diagnosed by a supposed expert I am 500 down and have a car running worse than before. I can't even be bothered to take it back because I'm too ****ed off. Anyway I've decided to replace the whole lot and set it up starting at the tank, pump, accumulator, WUR and hopefully it'll be sorted. Are there any issues with just sticking on another WUR from another engine or a brand new one if I can get it? I was hoping it would all come together and run ok providing all is new but I'm sure it's not quite so....
the problem is more likely to be in the metering head, once they have crud thru em they're never the same. WUR should be ok to be cleaned as long as it was put together with care. new one will cost you an arm and a leg, same with a metering head. Ideally you want to source a good 2nd hand pair from a car that was running ok, and make sure they are removed from the car with care not to get any dirt inside.
Thanks, I'm hoping the accumulator will do the trick but in the process of getting a replacement metering head but as for the condition...well it's down to trust. If you know of a metering head please let me know. VW price for a new WUR is 380 + VAT!, cheers Gordon for devaluing the pound (392 Euros on vagcat). Maybe if I want a laugh i'll get a price on a new metering head...they seem to ramp up the prices after the model is 15 years old
why dont you have someone that knows what theyre doing dianose the fault properly guessing at faults and buying all new parts will soon burn a big hole in your wallet
There's a resistance and voltage spec for the WUR - if that's right, it's probably not the source of a cold start problem.
no point in replacing perfectly okay parts ...and a good garage will rule out parts by doing a decent diagnosis if you really want to replace everything go ahead , its your money
check the resistance , check for 12v when running at the connector , and have the fuel pressure tested hot and cold
Thanks all for the help. I'm losing faith with garages as they have screwed my car. I'm lucky to have an engineering brother who has got hold of the pressure kit and has a CO meter and the K jet manuals to set it up. He just happens to be 300 miles way which is why I went to the bloody garage in the first place. He will do his best to find out the problem. If all else fails I will take it back to a garage, however I do not know who to trust so if you have any recommendations? They seems to be very good at destroying my wallet for no benefit. As far as replacing parts is concerned, well, I intent to keep the car until we can't get petrol anymore so money spent replacing 18 year old parts will mean it will run for another 18 years (BTW I'm not intending on spending 380 on a new WUR!)
sounds like your best off with your bro , i tried a few specialists and got raped , so like you i bought the tools and a manual and went over it and over it until i got it sussed its not that complicated once you read up on kjet and start to ignore alot of the poo advise around if you need any help with the pressure settings , i can post em up out of the book sometime
Cheers, will let you know how i get on. Got a working metering head on it's way for 23 so happy days!
even if your tank was full of crud it would still have to get through two filters before hitting the metering head.
mk2 16v KR engine 1991, and the fuel filter gave up letting a load of black sediment into the system. I didn't know the tank had so much dirt in.
Replaced the filter, housing (which was leaking after the garage looked at it) fuel pump and accumulator which was rotten. The new filter which the (rip off print money out of my wallet) garage charged 20 for was full of water and crap again (they obviously did a great job of cleaning the fuel system). Result- car is now much better and starts almost on the beat from cold, the only remaining issue is the WUR. So next step is to replace this with a second hand one I have and check all the fuel pressures which should be straightforward. One issue I have found is that new WUR are a small fortune to buy new...and I guess they have a finite lifespan and at some point most of us will be needing one at some point. Does anyone know of an old school bosch injection specialist that reconditions them?
