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the fuel pressure regulator is not functioning right and it's letting to much fuel in to the injectors or the fuel return line to the canister or from the canister back to the tank is kinked or blocked
The manner of construction of cold start valve is essentially quite similar, if not absolutely, as that of any other regular fuel injector. The main positive difference is the fact that the injection time of the cold start valve is gauged at intervals of a second. This is completely unlike a regular injector which has an injection time tuned to intervals of milliseconds.
this may be because the injection sensor sensing the amount of fuel going in may be failed. so it might stopped the fuel going inside the cylinder. so when you start the engine it turns over but fuel is not been injected inside the cyclinder so no firing is taking place. the light is the warning light which keeps on flickering.
2. may be there is a bloack in the fule injectors which blocks the fuel to enter the cylinder.
so try servising the injection sensing unit and injectors too.
It sounds like you aren't getting fuel out of the cold start injector... remove the injector when engine is cold and switch on ignition... you should get a fine spray pattern for a few seconds... if not then there is probably a problem with the cold start circuit (Temp sensor fault), or the injector is faulty. pull electrical connectors one at a time and look for corrosion... Hope this helps...;-)
The thing you need to do is run a leak down test on the fuel pump overnight, hook up a fuel pump test guage to the fuel injector gas rail test port, run the engine, note the fuel pressure when you shut the engine off, it should not drop more than 5 PSI overnight, if it does you need a new fuel pump. Your car doesn't use a cold start valve, that was used on very early Bosch K-Jetronic fuel injection systems, they where last used in the 80's