1997 Other Saturn Models Hard Start. Especially when Cold

Engine problem
1997 Other Saturn Models Manual 65000 miles

My Saturn Wagon is becoming a real hassle when its cold to the piont I cant Use it. I have replace the Coils, Plugs, Water Pump, Belt around Water pump, Fuel Pump and Fuel filter. Heres the issue. After the car has set over night on cold days it will not start right up. It tries very hard but fails 9/10 times. Some times I can crank it with pedal to the floor then turn the key to off. Crank it again at half pedal then up and down al while turning the key to off. If Im lucky it will catch and start. The engion makes a slugish sound at times like the pistons are having trouble moving then right before it can start it makes almost like a backfire sound. It runs great after its started and rarely has trouble the rest of the day. On warmer days it only takes 2-3 times trying to start. Oh ALso sometimes when it has problems starting the Check engion light comes on but not always. I am really just at my whitts end. I am tried of bring it to the mechanics having an issue fixed to resolve the problem an then still having the problem.