Rough idle question

ghunt

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I have noticed lately that my truck has started doing two things...

#1, on a "cold" start when it's hot outside (80 or above), I usually glow the truck about 5 seconds or so, but when I start it it idles rough and smokes, and it's generally too warm to kick on the fast idle. I tried glowing it up to 7-8 seconds but it doesn't seem to improve anything. Once I drive it a little ways it's fine. Now the odd thing is that I noticed that when it was down around 60-70 degrees, it wouldn't do this.

#2, if I stop at a store and come back out and start the truck, even if it's only been 10 minutes or so, it has been idling rough then also. Have only noticed it in the past few days.

What would be the cause of this?
 

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