Starting problems Rough idle?

Idk why seems like every other month that my Tacoma doesn't fire up right away.
I noticed after it rained it always has this problem. So I decided to add some reet
to the gas to take any moisture out and an new gas cap. It has 79 xxx and
I did a recent tune up sparks oil regular stuff filter.
Yesterday seems like the truck didn't want to fire up and was idling rough is it time for the timing to be checked ? Anyone know what needs to be changed or checked at this point in the trucks like? Is it worth the Toyota maint check up for a multi point inspection
Thanks TW

 

Rough Idle is most often a vacuum leak. Check your lines for cracks.
Often when changing the #6 plug, drivers side towards firewall, the vacuum line above it gets pulled for clearance, I would check that first.

 

ok sure thing I will check it out thanks