William2 wrote:Can anyone confirm my previous question that if the glass fuel pump bowl is half full would that suggest that the valves in my pump are working ok??
Sorry missed that post, i fitted new valves to my car to fix a very similar issue. Looking at it now and knowing my car starts quite easy from cold, the glass bowl stays full with a slight bubble at the top for a week or so (not really left it longer than that un run) more importantly if i slacken the hose off the carb i get fuel after one revolution of the engine.
When it had bad/leaking valves the fuel level would drop to the height of the brass filter (about half way down the glass bowl) i could crank it as much as i wanted it wouldn't start until i primed the Weber Bowls with Fuel. If you loosen the Carb hose as before you won't see any fuel for a good few revolutions if ever.
Strangely this is fairly common with these pumps, because the one way valves are staked in they often get left when people fit the kits. One word of warning, when you tap the new valve in they are very soft and it's very easy to damage them so you need to make sure they are air tight before refitting to the car (also don't forget to fit the little gasket under the valve)
If the Fuel pump is working correctly there is no need for a Fuel Bulb.
These are the one way valves and they live in the top half of the alloy casting above the diaphragm.
Library picture of Google