I bought the cut off switch on ebay. Search syponing on here, I'm sure there is a thread all about it. @geordieandy has also fitted a similar switch to mine as we suffered the same issue. Sent from my SM-N910F using Tapatalk
Update. I decided to fit a one way fuel valve in the main fuel line. This has stopped the syphoning issue but now presents another one. On the fuel tank side of the valve I have a fuel weep/leak that appears to be coming from the valve itself. I've used all new fuel lines and clamps on either side and overnight (when I left it to see what would happen) a piece of kitchen paper underneath the valve got soaked with fuel. Valve was in a horizontal position (not sure if this makes any difference). I wonder if I have a dodgy valve or some other thing is happening here. Thoughts? I also changed the oil. Thin as you like and stunk of fuel.
Where did you buy the fuel valve and is it controlled by the ignition ? Sent from my SM-N910F using Tapatalk
Rather not say where just ye. Emailed them and will call them tomorrow. Not controlled off of the ignition.
I fitted a simple on/off manual tap between tank and pump. Simple, cheap. effective, sorted. Sure its a little bit of faff switching on before starting and off when stopped. But I like the simplicity of it and no wiring or additional pre solenoid valve filter. In that picture, instead of the electrical gadget, I have my manual switch. Pleased you changed your oil. I had fuel in mine and I changed the oil and run the engine for a while until quite hot. Drained it and refilled with fresh oil. Good to flush the fuel out.
Update. One way valve had screw in barbs and while they were as tight as a gnats chuff it was clear I had a leak from the tank side. Took valve out, unscrewed barbs (both of them and then put them back in with some threadlock. Tightened up, replaced back into the fuel line, tightened up all clamps etc. and released the clamp on the main fuel line. Result - no weeping or leaks. Fired the girl up (remember I changed the oil), fired first time, no sign of flooding, no leaks anywhere. Feeling happy. Will keep a close eye on things for the next few days and if I'm still looking good at the weekend will take her for a 5-10 mile spin.
Ok...this may be a daft question....how does a 1way valve stop the fuel siphoning out of the tank & through a (potentially) leaky needle valve in a carb? (That was the jist of the original problem..?) A manual or electric cut off valve would stop the siphoning, but I can't see how a 1way valve would....? It would stop fuel flowing back into the tank...not sure how that helps, though. It's been a long day...so I could well be missing the obvious!! P.
I can't quite be sure but I suspect its because the valve prevents a free flow. Fuel will flow when the fuel pump is drawing it through but not when its switched off. That and I read a number of posts on here that suggested it . I also phoned Eurocarb who supplied the original ICT's to me to get their view - they were super helpful.
I fitted an on/off petrol tap. I messed about with one way valves and cutoff solenoids, none of them worked as well as the cheap and simple tap. When I park the van, I switch off the fuel supply with the tap and stops any syphoning. Before starting the engine, switch on the tap and off we go. May also help if someone nicks the van and drives off in it. Won't get far, float bowl empties, engine stops dead.
