Hello, I'm new to this site and was hoping someone can help out. My 1993 has a 5.0 V8 and when it's been sitting all night and you go to start it, I used to just turn the key and it would start. Now, you have to hold the pedal to the floor for it to start.

I changed plugs, rotor, and cap.

Once the truck is warmed up, I can turn it on with no problem by just turning the key or using the remote starter.

I only use 93 octane and use a fuel cleaner every oil change.

Any ideas what could be the issue? It does seem to happen more in the cold winters.

Thanks in advance!