Hi all When I was taking my left solex 32-34 pdsit carburettor out to clean, I labelled the wire ABC to the electrodes attached to the carburettor, unfortunately, due to the greasy nature of the job , A and C had fallen off, so I have a 50/50 chance of putting them back on right. Now I have gone for the way it looks as if that was how it was , but is there a more mechanical way of deciding which electrode fits where? What will happen if I try to start up and they are the wrong way round? Darron year 52
All the connectors on the carb are daisy chained together so as long as they're all live with the ignition on its ok...
hi Deefer I haver changed all the fuel lines, new fuel filter, cleaned the carbs, checked the vacuum tubes that are present, replaced clean fuel. Now there will be air in the fuel pipe, into the carbs, will the fuel pump be able to push the fuel back into the carbs or should I just turn the engine over? Darron
If its an electric fuel pump just connect it up and run it it'll fill the float chambers till the valve shuts it..I've got a bypass for the relay to help this... If original mechanical one it can take a while of turning over to get enough fuel through to fill it up and get it going... A bit of fuel/ easystart down the carbs might help prime the engine to get things going faster.
hi deefer It is an electric fuel pump, I can hear it ticking as I turn the ignition on, fingers crossed darron
You should really put a relay on it so it only pumps with the engine running... Just in case anything goes wrong so the fuel stops
Hi Deefer, "just in case anything goes wrong" I imagine a lot of things can go wrong, I think the pump only come on before I start the engine, with a yellow light on the dash board. Forgive my ignorance but how does a relay work and how do you install it?
You have a relay in the live feed to the pump that gets "switched on" by a connection to the blue wire from the alternator ( the one that makes the red light on the dash go off) usually. I think a there's a thread here for fuel pump relay if you search.. probably with pictures .....but if you can't find it I'm sure I can dig something up
Usually the pump arrangement would have a way of providing 12 volts to the pump while the starter is running then a relay powered off the alternator so you can prime the pump as the starter is running then the alternator takes over. So if the engine stops or the ignition is switched off the pump stops pouring petrol into the engine bay when the fuel pipe breaks.
