[Healeys] air/fuel mixture

[Jess Power]

  I need some help-----again.I bought a colortune and synched the  
carbs in my BN1.It is running really rough and the colortune shows  
yellow or a too rich mixture even with the air/fuel mixture nuts  
almost completely closed.It is still running hot even with a new water  
pump,new thermostat an a radiater rodding.I think the timing might be  
off.It is backfiring from the tailpipe and the carbs.Any suggestions?