Cold start problem

[Noel willuams]

I have a cold start problem with my v6 wk caprice first thing in the morning it won't seem to fire as the day warms up it starts like normal I've put in another ecu new engine loom and tryed heaps of other part with no luck could anybody please help so i can get this problem sorted out. Cheers

 

[strgas]

When it does start is it running rough for a short time with any signs of black smoke out of the exhaust... hows your fuel economy...
Could be dribbling injectors make an overly rich start up runs rough till excess fuel is burnt of

 

[krusing]

Low pressure on the fuel pump
partially blocked Fuel Filter
Fuel siphons back over night
Plugs breaking down
Plug Gap,
Plug Leads breaking down
LIM Gaskets [if a V6]
CAS
DFI [if a V6]
Vacuum leak when cold and caused by contraction