I have a 2000 Cirrus with the 2.5 V6. It would start and run just fine. Here lately and what I've notice in the evening is when it gives me problems. It will run then stall. I check the fuel pressure and there was none. I took a pump off another car and had the same problem. Figuring it was bad too I bought a new one installed it, ran it during the day no problem, as the night fell the car was hard to start, run for awhile then stall, after a minute or two or five it would start I also noticed that the valves would chatter. What do you think?

 

Did you change the fuel filter