1995 Silverado: Rough, Surging Idle and Poor Throttle Responce

[2000CAYukon]

Originally Posted by Newell_89

Guys thanks for all your help and input. Especially your time. But it wasnt computer related, a vacuum leak, sensor problem or a fuel problem. It was a "mechanical error" in the valve train. The set of $450.00 Retro-fit Hydraulic Roller Lifters form comp cams had 1 lifter! out 16 that was assembled wrong.. the plunger in the lifter would bottom out in the lifter almost a 1/4" before the rest of them did after setting the valves meaning that my intake valve was staying slightly open. through all 4 strokes.

Only reason i caught this was because i have a dual plain intake and fuel was shooting out of the drivers side cylinder bank side of the throttle body, took the valve covers off to investigate and confirmed my problem. I searched the internet and I'm not the first that had this problem from comp and their retro hydraulic roller lifters.

Anyways just thought i'd let you all know. i dont know how i dident catch this the first time i set the valves, Atleast i know now..

Pretty hard for the computer to do it's thing when there are mechanical issues. I have seen valves adjusted too tight cause these kind of issues.

Glad you figured it out. How does it run now? That 383 should make that truck fun to drive!

//2000CAYukon