Strange startup problem

[Vette1993]

I've got a 1985 with 222600 kilometres on the dial, that starts up lickety- split every morning! It warms up fairly well, a little rough sometimes until normal operating temperature is achieved. Drive to work, about half hour on the road, it then sits unused for around 9 hours. When attempting to start up for the ride home, it cranks over rapidly, yet will not fire up unless I push the accelerator halfway down. I've opened the key and waited 10-20 seconds before cranking, to build up fuel pressure, but this doesn't seem to make a difference. Everything is new, plugs, cap, rotor, wires, coil,etc. any ideas?
If it was a carberated engine, I would be looking at a choke problem. Same symptoms.

 

[OL Yeller]

Fuel pump issue?

 

[AxeZ06]

Fuel filter?

 

[Vette1993]

It has a new fuel filter, fuel pump works fine, always stored for winter with a full tank of gas and fuel stabilizer. Fires right up in the springtime. Heated garage.

 

[OL Yeller]

Strange it only happens after sitting during the day, you would think it would do the same thing after sitting over night.

Good luck solving your issue, hopefully someone will chime in shortly.

 

[kerry4]

Not a mechanic here but how old is your starter? You might just have to take it to a specialist. Hope you figure it out.