Lately, I've noticed more of a fuel smell to my exhaust. It smells like it is definitely running rich. Also, when the engine is just warming up, I get severe hesitation. The only way I can describe it is that it feels exactly like if I was pumping the gas pedal as I accelerated. I think I have a bad fuel accumulator coupled with either a bad thermo-time switch or control pressure regulator. Any thoughts or am I completely off base?