Question about my fuel pump

First off, I am NOT a car guy...Have mercy.

I've noticed here lately when I start my '99 S-10, I have to let the key sit on the ON position for just a moment before I can start my truck. Should I be worried about the fuel pump pressure or possibly having to replace it altogether? I've heard that this can decrease gas mileage so I was slightly concerned.

Thanks in advance.

Edit: This should have been in the S-10 section

You need to do or have a leak down & pressure check. Your fuel pressure should be 60psi it should hold 55 for several minutes. If it drops too quickly you most likely have a fuel leak & that effects mileage.
I just noticed if you check the post on 2001 fuel problem on of the guys gives you a step by step guide for checking pump & leaks.

First off, I am NOT a car guy...Have mercy.

I've noticed here lately when I start my '99 S-10, I have to let the key sit on the ON position for just a moment before I can start my truck. Should I be worried about the fuel pump pressure or possibly having to replace it altogether? I've heard that this can decrease gas mileage so I was slightly concerned.

Thanks in advance.

Edit: This should have been in the S-10 section

Describe the let off on key.
Let off on start and starts or let off on nstartb and the kit the start to start.
You need 65 lbs cranking pressure for a good cold start
Fuel pressure specs are 60/66 on a 4.3 engine.
Any check engine lights or flashing check engine light engine running?
What pressure do you have?