Jim, as you know I have done a lot of work to her car. It has new...

plugs and wires
head gasket
water pump
timing belt and belts
radiator fan
ECT wire/connector
battery

This issue was happening before I did all this work and I'm wanting to clear up everything at once. I couldn't afford the cap and rotor (yet) but would this cause the light to come on? Where is the fuel pressure regulator and at? I'm just checking the hose for fuel? I may put a new fuel filter on it but I'm not sure if that's "check engine light" related.