Finally problems starting the Integra

Has anyone had any luck solving intermittent starting with '91 Integra? Cold weather triggered the first instance. Maybe a fuel line solenoid. Then after a delayed start, slight firing and ultimate failure, but with gas fumes out the exhaust. Of course the mechanic can’t duplicate the trouble. New fuel pump, distributor, and timing belt. Help

I believe there’s a cold-start injector mounted on the end of the intake manifold that adds extra fuel, well, during a cold start. If there is one, have that checked out.

Tester