so i installed my 3k kit (well its a 4k without inner spring) and here's the deal. first time i started the truck it idled about about 70 rpm higher than the original 750rpm and the instructions said this is normal and should b compensated for by the idle screw. but after i drove it around a bit it now sits at 1000 rpm ? so still use the idle screw or back the spring nuts off one or two click? i did 5 clicks, a decision made after much much researching, chosing not to use the .050-.060 the instructsions want. so i ended up with .075

 

hi
you are not off by much 1 click lower would prob do it .

about once a year i have to turn my idle up a small amount so i would prob not mess with it .
what is your rpm with a/c running ?
ok sayes 820 rpm for mine.
too low and stalls out with ac running .

are you getting te desired rpm with the presant setting ?

 

backed it off 2 clicks and im at 800 rpm. works for me....its winter here so a/c won't b running for a few months and a touch higher on the idle is nice. perfect id say lol

 

Did you originally adjust the idle when the engine was cold? The idle will increase as the engine warms up. You need to set the idle on a hot engine, otherwise you will get the larger RPM creep. About 4 months after my p-pump conversion, my dually started doing this. It would idle 875 cold, but would creep to 1200 in about 5 minutes. Got worse after I put in 150hp injectors. Just had to back off the idle.

 

as mentioned two clicks and im down. never touched original idle setting so i assumed it was all in the gsk setting. happy with it now....still pulls to 2800+ rpm
p.s. will putting in a gsk create an audible knocking sound from the engine compartment? never was one till now...sounds kinda like a motor would knock when oil is borderline low, but its not. i know i seen a thread on here and someone posted a vid of if....just couldn't find it to c what came of that discussion.