cold start injector Options

[stecz]

I think I found my hot start problem... If I get the car good and warm, shut it off and go into a store or something, it will not restart unless I let it sit for 30 minutes or so. I initially thought I was vapor locking, but it would happen on relatively cool days (75 degrees). I decided to try something else, because it didn't "feel" like vaporlock, it felt like flooding. So, I visegripped the fuel line to the cold start injector. I haven't had the problem since.

What controls the cold start injector firing? The car isn't running rich all of the time, so I think the injector is turning off appropriately, but what causes it to fire at all?

Thanks

[pbanders]

The CSV operates independently of the FI ECU. It is controlled by a thermo or thermo-time switch and the cranking circuit. The CSV is supplied +12V during cranking. If the temperature is below the setpoint (about 32 deg. F or less), the thermoswitch turns on, supplying ground to the other side of the CSV. In systems with a thermo-time switch the operation is the same, except that an internal heater in the switch limits the amount of time the CSV is on (regardless of how much the engine is cranked) to about 15 to 20 seconds to prevent flooding.