1.2 misfire

I’m having big issues with misfire on my 1.6 8V on twin 40s.
timing all good,carbs all good,fitted new coil/plugs/leads/roter and cap and still misfire.
i have ordered an ignition control module that’s in the dizzy to try next.
im starting to wonder if I have a bad earth? Where are the earth points because I can’t see one from the engine to body or gearbox to body.
compression at 190 on all 4 cylinders so all good on that.
purchased a second hand distributor but car wouldn’t even start with that on 🤦🏻*♂️.
please help

Sorry forgot to mention the car was a 1.2 carb so using that ignition set up

I dont think it would be earth related what pump are you running. ,

Facet red top at 3 psi

Right what did you set the timing at.?

If you give it the beans/even to 7 grand it’s fine so I’m pretty sure it’s not a fuel issue

Strange pal. So its low down the misfire starts? Does it miss on idle?

Cam is set to 105 degrees,crank 10.
Had it rolling roaded and it pulled like a train,had a slight miss low end but it’s getting worse and worse,sat cruising is horrendous.Even checked head gasket all ok

Yeah misses on idle but not badly,Rev it up to 3 to 3 1/2 it goes

That was my next question head gasket..