i recently put in a 63 series K and N cold air intake and once in a while when my truck is cold or sits over night there is a hesitation in the start up. has anyone else had this problem or is this a normal happening? when i use my truck during the day is starts up fine no problem its just when it sits overnight sometimes there is a slight hesitation. anyone have any similar occurances or suggestions?

 

Mine kinda idles rough the first 5-10sec or so on first start of the day and then clears right up . I have a K&N drop in filter and Catback.

 

how much do K&N drop ins go for?

 

do you ever get a little hissing sound sounds like from the power steering when the truck is cold also? i get that sound every once in a while and that goes away also

 

never noticed any hissing but the drop in ran about $50 at Advance Auto

 

ive had this problem too, i have an 08 5.7l and when i asked the dealer about it they said it was nothing to worry about.

 

Mine does the same thing...Not after one night tho...Maybe 2 or 3 nights.

 

i have an '08 5.7 and i have an aem cai and mine hesitates too on start up after a colder night. during the day and with regular driving, it is fine. it's just alittle hesitation between turning the key and the actual engine start up. i do know that my '08 has start assist which means you don't have to crank the key for the engine to start up, just a little turn. this assist seems to help, being that i just found out about it from the dealer bc i went there asking them about the hesitating and they said there is nothing to worry about..