Starting issues 2.0 FI Options

[Fortyeights]

Hi,

Just bought a 2.0 FI, which has some starting issues?
Turns over fine but takes ages to pick up and fire, then sounds like it only running on two cylinders for about 30 seconds. But following getting it running and slightly warm runs nice.
What is the most likely culprit, I'm going to replace all the service parts, fuel pipes and injector seals as a matter of course, is the cold starting valve a likely culprit? I presume it gives extra fuel ?
If it is that, is it fixable or is it a replacement job ?

Regards

Carl

[brant]

really doubtful that it is the cold start valve
(unless the valve is stuck open and flooding the car)

the thermo switch for activating that valve only turns it "on" or causes it to add fuel at a very low temperature around 0 or 15degrees F.... something like that

so very unlikely your problem

but to rule out that it is not leaking and causing a rich condition, you can disconnect the fuel line to it and plug that line to see if it starts better. or pull the valve and make sure gas is not dripping out when it should not be

how are the plugs on the cylinders that are not working? rich or lean/dry?

really better to start with the basics and work through step by step
rarely does it solve anything to hunt/peck

that said...
the first things that come to my mind are:

-djet FI points in the bottom of the distributor
they run the injectors in pairs, so when one side of these points goes bad, 2 cylinders stop getting fuel at once. check the points, then pull the injectors and put them into cups... crank the motor for a second and watch the spray patterns for all 4 injectors to see if they are a good pattern and of equal amount

- common rich problems caused by the MPS diaphragm failing.. car barely runs or won't start at all
- another common rich problem can be caused by the CHT which if it fails will signal the ECU to run excessively rich and barely start or barely run.

still like stated above. You really need to go through the basics first when diagnosing fuel injection. Making sure that your valves are adjusted correctly, your timing is correct, and plugs/wires/cap/rotor/points are all working well before moving onto the FI components.