so my 1991 K1500 (305) went on the scope the other day, and we ran it through its paces. Comes up to temp quickly (190 deg), O2 sensor input moving rapidly as per spec. All other measures well within range....didn't have time to do a test drive with the scope on...
I've just about run the truck right dry (surging as I got to the pump :), and put $20 CDN in (got about 26L of fuel). not even a 1/4 tank!!! now I've just turned 110 KM and lost the needle again...will get a comfortable
120KM out of it. does this sound right to you guys/gals??no other running problems that I can see. runs and drives perfect. any other thoughts on fuel economy, or is this it?
b