Juddering fixed!!
At the weekend I tackled replacing lots of parts on my 1.0 Arosa, and I'm pleased to say my juddering
problem appears to have completely disappeared!
I replaced:
Front brake discs
Front brake pads
All x4 spark plugs
Pollen/cabin filter
Fuel filter
I'm pretty certain it's the spark plugs that were the cause of the judder - x2 of them were completely worn down, so much so that the tips were pretty non-existant! My own fault, they hadn't been replaced since the car was new, and it's done 55,000 miles!!
All the jobs went very well and easily, except the fuel filter. It was difficult to remove, and then when I went to fit the replacement, I had difficulty. I bought a non-genuine fuel filter, and it came with blue plastic connectors - well to cut a long story short, these do not appear compatible with the fuel pipes on an Arosa. I broke the existing connectors getting the fuel pipes off the existing filter, so I now currently have the new filter fitted, but not 100% correctly - the pipes are pushed onto the new filter securely, but are not 100% securely. But no fuel leaks at all so I'm happy! Only a temporary measure though, going to buy a genuine Seat fuel filter ASAP and fit it properly.
A little tip which luckily I did was once I had fitted the rearmost fuel pipe onto the new fuel filter, I thought I ought to prime the filter. This was achieved very easily by getting my Dad to hold the filter over a can (to catch the fuel), whilst I switched the ignition on, then off, a few times, until fuel was coming through the filter. Didn't actually start the engine up, only turned ignition on.
Got all the parts from AVS (
www.vwspares.co.uk). Everything I got, apart from the fuel filter, fitted perfectly and appears very good quality. It seems they don't sell cheap rubbish. I can recommend them fully.
1LW, I would advise you to check your spark plugs, as my juddering was only intermittent too, and it sounds like you have a very similar
problem to me.
The spark plugs from
www.vwspares.co.uk are made by Beru (the same company that manufacturers the OEM HT leads on my Arosa), and for the AUC engine (like mine), cost £3.98 each. They seem very good quality, and I'm 99% sure they are platinum ones (I've thrown the boxes away now, but can remember). In fact I'm 99.99999% sure!
Hope that helps.