Obwonkonobe
Full Access Member
- Joined
- Feb 21, 2017
- Posts
- 531
- Reaction score
- 116
- Location
- AZ
- First Name
- Ethan
- Truck Year
- 78
- Truck Model
- C10 custom deluxe
- Engine Size
- 350
I know ive caught flac before recently for being a bone head and undoing things I didnt have the knowlage to redo, and after this last hump im done messing with my daily lol, just want to make that clear
So ive got the motor back together, hydraulic lifters looked good. I went to start it and it ran really rough, i had to hold it cracked and it backfired once. It also didn't want to rev up when i gave it gas. My theory is my valve train. Im going to ruke out timing because it did run, and i have my dist very close to photos of it before the tear down, and i timed it pretty close with a vacuum gauge.
When i went through and readjusted the lifters I bumped the motor to where a corresponding valve was obviously open, then adjusted the adjacent valve for the same cylinder, to be sure the valve i was adjusting was truly closed. I took the slack out of the rocker and added a half turn per rocker, went like that on the whole motor.
My theory is that since the hydraulic lifters arent new, and upon inspection while the motor was appart, wouldn't compress due to what I assume to be internal oil pressure, when i added the half turn preload i was actualy putting pressure on the valve springs and not preloading the lifters. And im loosing comoression because my valves are cracked open.
A note though, today when i went back and started looking at the valves(i adjusted them yesterday), some seemed loose again, it may be my mistake though
While I was looking at the motor i did see the lifters for the open valves were compressed, so im not affraid of stuck lifters.
If anyone knows a meathod to adjust hydraulic lifters that have been run in the past couple days id appreciate it, thank you. And again sorry about all the dumba** posts, i promise not to get in over my head again, ive learned my lesson, and sorry about the long post, just trying to be through
So ive got the motor back together, hydraulic lifters looked good. I went to start it and it ran really rough, i had to hold it cracked and it backfired once. It also didn't want to rev up when i gave it gas. My theory is my valve train. Im going to ruke out timing because it did run, and i have my dist very close to photos of it before the tear down, and i timed it pretty close with a vacuum gauge.
When i went through and readjusted the lifters I bumped the motor to where a corresponding valve was obviously open, then adjusted the adjacent valve for the same cylinder, to be sure the valve i was adjusting was truly closed. I took the slack out of the rocker and added a half turn per rocker, went like that on the whole motor.
My theory is that since the hydraulic lifters arent new, and upon inspection while the motor was appart, wouldn't compress due to what I assume to be internal oil pressure, when i added the half turn preload i was actualy putting pressure on the valve springs and not preloading the lifters. And im loosing comoression because my valves are cracked open.
A note though, today when i went back and started looking at the valves(i adjusted them yesterday), some seemed loose again, it may be my mistake though
While I was looking at the motor i did see the lifters for the open valves were compressed, so im not affraid of stuck lifters.
If anyone knows a meathod to adjust hydraulic lifters that have been run in the past couple days id appreciate it, thank you. And again sorry about all the dumba** posts, i promise not to get in over my head again, ive learned my lesson, and sorry about the long post, just trying to be through
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