ive had the tank off me bike over the last few days as i was doing valve clearences, just going over a few things , carbs stripped and cleaned then ive turned my attention to the fuel tap, now am i right in thinking that no fuel should come out of the tap in the on or reserve positions as fuel should be sucked out of the tank while on the bike, as mine pisses fuel if i turn the knob i was in the understanding that the tap works on the vacuum from no.3 cylinder and not gravity fed , (or am i just a twat)

Yep spot on, I would say your tap is buggered. If your carb float valves leak while this is happening then you risk filling the cylinder with fuel and bending a conrod when you start it.

Rick Oliver sells rebuild kits. I had a leaky tap, so I fitted a small plastic inline fuel tap (like off a lawn mower or similar) and just turn this off to stop the flow.

i Will have a fuel tap in a couple of days for sale if your intrested just gotta wait for my tank to come back :)

If Deviant doesn't want ya fuel tap, I may well take it off ya hands Eamer.

thanks eamer but riley sent me a tap , so im sorted now , cheers anyway bud

Might still have it off ya eamer. Got ya PM. Just waiting to see if I have cured my prob or not.