Volvo: 89 240GL cranking problems, vacuum leaks, poor tank

Question
My 240GL takes for ever to crank in the morning, especially if it is wet outside..The starter will turn the engine over for a while and no go..but when I let go of the ignition it will sputter for a second and then nothing. I have replaced the 25amp fuse to the fuel relay with a enclosed type fuse holder, I have replaced all plug wires, the fuel pump relay seems to work fine and the external fuel pump seems to work fine (I tried replacing the fuel filter but could not get the old one to come off)...Any ideas???

Answer
Trey,
Looks like you need to go deeper. How about the plugs? Are they good? Is the fuel pressure correct 42psi? Cap and rotor in good condition? Do you have good fuel in the car or could you have received a poor tank full? Are there any faulty vacuum lines or other vacuum leaks? You will have to do whatever it takes to replace the fuel filter. Is the in tank pump working? Pull the vac line off the fuel press regulator and look for leaking fuel. Replace the regulator if it leaks. Do you have a good battery so all the power needs are taken care of?