Question:

I have a 97 GM k3500 Dually. I'd like to turn up the fuel on the IP a 1/4 turn. However, I'm having trouble locating the adjustment screw. Could someone please let me know exactly where it is on this particular IP. As I understand, it can be accessed from the side or top of the IP. Which covers do I remove? A picture would be great... Also, can it be done on this vehicle without removing the intake?

Thanks!

97 pumps,s are electronically controlled via the pcm . Pcm would have to be reflashed for more fuel . Heath, for one does reflashes.