truck wont start sometimes
 

It's nice to see this forum!!! Looking for advice on my '88 f350 4x4. It's got a 351 with a C6. After it sits overnight or for a couple of hours it is hard to start. I use to only just turn the key and it would fire right up! Now after it sits for a while a have to crank the heck out of it to get it to start. It only has 30k miles. Any thought anyone?