solex and disc type regulator

hello,
i've installed a new solex to my engine.after some usage,tried to inspect the spark plugs and found them black.
buyed one disc type fuel press regulator to lower the fuel pressure to 1+1/2 to 2 psi.
my question is:is there any problem with the mechanical fuel pump and the regulator?i'm thinking to use an electrical fuel pump 4-7 psi with the regulator.
can i connect the electric before the mechanical?my think is to use it on priming after non-use periods to avoid too much cranking,and in case of fault connect it to power,bypass the mechanical and continue.

Thank you
George

 

I use a mechanical pump (replacement w/no glass bowl) and a Solex. Really haven't had any problems other than carb throat icing until warmed up. A block heater cured that on really cold days. I'd think the regulator would be fine with the mechanical pump, after all its job is to regulate. The Solex does seem to lose its prime after a long period of sitting, but not enough of a bother to me to plumb and wire in another pump. As long as your mechanical pump is in good shape I wouldn't bother. If it's weak, I'd go one way or the other but wouldn't bother with both.

 

a good mechanical can produce 4+1/2 - 5psi at cranking speed as the miltary manual says.i will check that.
but the solex only needs 1+1/2 to 2 psi

 

i want to wire the electric with a push button.my think is after a long sitting of the jeep to work the pump before starting.and then start the engine.i will remove the mechanical pump.
will this solve the priming problem with the solex after a long non-usage period?