Cold start and running issues

[samp5679]

Not sure if this is in the correct area 
Looking for some advice.
Car was running great 
Now very poor cold start, when eventually running at temp misfire at low RPMs and cuts out when stop as idle drops too low 
Any ideas ? 
I have checked cold start injector that’s working 
Next plugs ?? Leads ??? Dizzy cap ???
Anyone had this before. ?
Any advice would be appreciated 
Simon

[Chris Williams]

Difficult one really, could be anything. I would suggest jumping your fuel pump relay to try and eliminate fuel related issues, then your down to basic checks as you mentioned. Generally you need to (as I'm sure your aware) eliminate one or the other fuel or spark and work from there.
Chris

[Stuart Rees]

Check for split or loose vacuum lines, especially to the Control pressure regulator (Warm up regulator)