With my long start issues, it started out as a long start after the car sat for more than 20 minutes but then I could let the fuel pump prime and it would fire up. Once started, the car would run fine without any issue at all, with the exception of spot KR of 1-3* under high load sporadically. Over time it got progressively worse, where I could let the pump prime three times and it would fire up but still took up to 3 seconds of cranking to get there. I changed the regulator (with a cheap auto zone one), because when I removed the hose off the end of it fuel would poor out after the car ran for a couple of seconds. The symptoms never improved. Someone mentioned that cheaper regulators are known to be junk and I purchased a stock version and the condition improved maybe 20%, but still with the long starts. Now, when I would put a gauge on it after it had just been shut off the PSI would be good, but bleed down after about 20 minutes to nothing. While running the PSI would be great. Again, I had no problems with the car after it was running except hit and miss 1-3* of KR under high load.
I changed the fuel pump assembly last night, and the car fires right up even after sitting all night. I don't think it was my pump, but the corrugated hose in the pump assembly because when I was dumping the fuel from the bucket I noticed fuel was also coming from the plastic corrugated hose out of a very tiny crack/hole. Since, I had the new pump assembly already and rewired the car for the new style connector the new pump went in anyway. My car has 170k miles almost and figured it was gonna be time soon anyway. Hope this helps the OP some or anyone else with this problem in the future.
Tate
I changed the fuel pump assembly last night, and the car fires right up even after sitting all night. I don't think it was my pump, but the corrugated hose in the pump assembly because when I was dumping the fuel from the bucket I noticed fuel was also coming from the plastic corrugated hose out of a very tiny crack/hole. Since, I had the new pump assembly already and rewired the car for the new style connector the new pump went in anyway. My car has 170k miles almost and figured it was gonna be time soon anyway. Hope this helps the OP some or anyone else with this problem in the future.
Tate