Not getting a click and the safety tab is all the way down. Actually, it`a little loose and will have to be secured up when I get the line on. I don`t think it`s on properly as I can pull the fuel line off if the tab is out of the way. I don`t want to squeeze too hard as it is plastic and I`m working in my garage. 19 degrees C in the house, -25C outside, garage is about 2C. Plastic is not very forgiving at those temps.

Just wondering how far onto the fuel pump spigot is the fuel line supposed to go? My orange safety catch is out of the way, I pushed the line on and it went on smoothly and then just stopped. There is about 6mm between the safety clip and the reinforcing flanges on the plastic spigot. I tried squeezing the two little side tabs but it would not go on any further. Are the little side tabs supposed to pop out when the connector reaches the correct position? With it on as far as I can get it the safety connector will snap up. If I pull it down I can pull the fuel line off without depressing the side tabs.

I stopped using the M25 about 10 years ago. We used to go down Dover ferry & rallies down Chislehurst.

Ha, thanks for the offer m8, Brussels is one place I can't get past quick enough, that circular is one scary place to be filtering. Past Namur it's fine.

Just done an oil change using an HF204 filter from Hi-Flo Filtro. But this one is a race-spec with a nut on the end - and even if you don't use the hole for wiring it on, the end-nut makes removal and replacement very easy. It is an HFC204-RC (or RS), and cost me a pound more than the standard one! 

I've used Hi-Flo before and they seem a good make. I'm just hoping this doesn't start suffering the same problems as the K&N nut.