starting question

[ffdono14]

I recently purchased a late 99 F250. I love this truck! I have had if for about three weeks now, and i have been doing some preventative maintenance. Oil, fuel filter etc. Im working on putting in herculiner now. However, last week i changed the fuel filter, and it seems to take more cranks to start. It used to take about 2 seconds of cranking to start, now it takes like 3 or 4 seconds. Is that normal after a fuel filter change? what may be causing this, and can it be fixed?
Thanks, Kevin

[ffdono14]

I live in connecticut, so its getting preety cold at night, but i always plug it in.

[NoRalPh]

3 seconds, especially in the cold, doesn't seem too long to me, but take a good look at you GlowPlug system. There's a great sticky on this...

Also, It might not be the best time to apply Herculiner now though, not only is it awfully cold, but the humidity is very low even in a heated garage. Herculiner cures with the moisture in the air and it's going to take forever at current levels.