Puff o White smoke?

[2003kingranch]

so i noticed the last few days (dont usually watch the tail pipe when i start it) that im getting a very small puff of white smoke. not losing coolant.

my thoughts..... its unburnt fuel. haven't had anyone smell it yet.
thinking the truck starts so fast it doesn't burn all the fuel. turns over maybe once and fires.



whats your thoughts. truck rarely sees over 2200 rpm so wouldnt think its the hg but who knows

[2003kingranch]

[sinner6.0L]

unburned fuel. we run off of heat, no heat = no ignition and that fuel goes out the exhaust

I know for sure mine puffs a little smoke for the first few seconds at startup..... not even a little concerned about it right now, especially since i have no cat

[azkcr]

Mine likes to trickle white smoke for a good 2-3 seconds or more depending on the temp.