1991 Chevrolet Cavalier • 290,000 miles

2 door, 4 cyl 1991 Cavalier with a single point throttle body injector. The problem I have is, it won't start when engine is cold unless I pour a little gas in the throttle to get it started. Then after the car is warmed up and driven awhile, it starts back up after shut-off just fine all the rest of the day. Then the next day or after the engine has been off for a long time, I'll have the same problem all over again. Is there a cold start sensor of some kind that could be the problem? Something is not causing the injector to prime gas into the throttle when the engine is cold. But then there's no problem when engine is hot. Thanks.
February 26, 2013.

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