Hard to start when cold, help me troubleshoot it Options

[rwilner]

My 73 2.0L is hard to start when cold. It cranks for about 5 or 10s, and will slowly catch.

I made this video so you all can see exactly what happens.

When the car is warm, it will start up in 1 second (1 or 2 engine turns), as expected. IOW, if I run into the store to get some milk, when i come out, the car starts right up.

i've done the following:

• Cap, rotor, plugs, wires, oil change, valve adjust
• Set timing: it's dead nuts 27 deg BTDC @ 3500 rpm
• Changed the fuel filter (I did that right before I made the video)
• Replaced all the vacuum lines in the engine compartment

also relevant:

• I have no points in the car -- it's a crane optical unit (XR3000). fuel injection is stock otherwise
• Fuel pressure is about 31lbs when operating
• idle is very steady between 900 and 1k rpm during operation
• PO put in a new bosch fuel pump less than 5k miles ago

Where would you guys go to start troubleshooting next? I'm thinking cold start valve?

Thanks!!
Rich