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Hello Mike,
I suggest you get a manual and search the archives for some basics on CIS. You have to understand what each component does before you can proceed. The Cold Start Valve ( CSV) only operates when you have the key in the Start position and has nothing to do with cold running. If your problem occurs after the engine fires and the key is in the ON position, forget the CSV and move on. After the engine fires, it needs a very rich mixture to establish a cold idle. CIS lambda does this by using a cold default duty cycle for the Frequency Valve combined with the normal lower control pressure created by the WUR. If you don't have good fuel pressure, a pulsing FV, the correct control pressure and no vacuum leaks, it will not idle cold. The system is pressure dependent, vacuum sensitive and you will need to check the pressures and the switches that could shut off the fuel pump when the key is in the ON position.
Before starting I would turn the key to ON, remove the air filter and lift up the air flow sensor to see if the fuel pump runs for a second,(no more you will flood it). While you are there, disconnect and plug the grey hose at the back of the distributor. If you have a dwell meter hook it up to the green white wire in the test port under the plastic cover on the left.
If you can get it running and warmed up, you should check the timing and check the FV duty cycle open and closed loop. Set the warm idle speed to 950 rpm and the timing to 5 BTDC. If the timing is correct, the idle speed 950, vac retard disconnected, and the FV dwell is 58 (4 cyl scale) and you still have this COLD RUNNING PROBLEM, you need to have the system and control pressure checked with a gauge.
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Paul
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