Two weeks ago I put in a 4k gsk. It idled fine just about where it was before the install. Over the last couple of weeks it seems to have dropped alittle bit (from 800rpm to 600rpm). How do I raise it back up? Do I have to tighten down the gsk or is there an idle adjustment srcew? TIA Ken

 

Stumped??????

 

There is a 10 mm bolt on the bottom rear of the p-pump.

Kinda hard to explain but if you feel around back there the linkage will lift off it when you move it. The bolt will run almost vertical to touch the linkage.

Bout as much help as I can give you. I dont have a picture ANYWHERE. (I looked)

 

https://www.dieseltruckresource.com/...d.php?t=165710

 

4K's

tend to have a bouncy idle, mine does the same, after a long highway run or hard tow, it will drop by itself, then usually when i let the truck sit, or the next day it will idle back up right where it was before. a friends truck does the same thing as well...

I have mine adjusted to where one more click back on both springs and my idle will drop to 300 rpms, where its at right now the tach just zooms... however i do believe its too tight, as it only revs to 3600 rpms on free rev which is ok tho, cause i dont have 60 lbs springs...

Rick

 

TxDiesel007, Thats exactly what its doing. Somedays fine others not. Iguess it just the nature of the beast and will have to live with it.