When I leave work after it sits in the parking lot exposed to the sun all day, it seems to run a little rough (choked if you will). It will boost, but it just seams lame. Then, after a mile or so on the road it goes back to normal. My theory is the heat that is built up in the engine compartment is causing hot air to be fed to it. Anybody have any input? It doesn't seem to be ignition/fuel related as it becomes normal everyday. Also, on a recent cool night, it ran like a banshee.

 

I think you've answered your own question.... ?

Dan

 

My truck does the same... I think your thoughts are the right answers.

-Mike

 

You got it!