Model : FJ45 1983 - stock
I noticed recently that I had alot of engine vibration, maybe low speed, and the exhaust fumes were excessive. There's no smoke. Thought it was time to re-adjust the carburetor using lean median method.
Set-up
- Digital tachometer connected to the coil
- Vacuum gauge on the inlet.
This is what it was like before I started. Engine was already warmed. Water bottle is my vibration meter. Getting 14-15 in Hg vacuum and speed is roughly 600-650.
Closed the idle mixture screw, and then turned out 2 turns. (at 1 1/2 engine cuts out). Then slowly increased my idle mixture screw to max RPM and reduced the speed back down to roughly 680 RPM. Did that a few times; this was my final...
Tried to set the speed at an average of 690 RPM and was getting about 19 in Hg; but still had engine vibration. (I wanted to upload the videos but could not figure how to do that? Does Mud not allow videos?).
I can hear my rockers, so thinking I have to tighten them. But I'm unsure on the following :
I noticed recently that I had alot of engine vibration, maybe low speed, and the exhaust fumes were excessive. There's no smoke. Thought it was time to re-adjust the carburetor using lean median method.
Set-up
- Digital tachometer connected to the coil
- Vacuum gauge on the inlet.
This is what it was like before I started. Engine was already warmed. Water bottle is my vibration meter. Getting 14-15 in Hg vacuum and speed is roughly 600-650.
Closed the idle mixture screw, and then turned out 2 turns. (at 1 1/2 engine cuts out). Then slowly increased my idle mixture screw to max RPM and reduced the speed back down to roughly 680 RPM. Did that a few times; this was my final...
Tried to set the speed at an average of 690 RPM and was getting about 19 in Hg; but still had engine vibration. (I wanted to upload the videos but could not figure how to do that? Does Mud not allow videos?).
I can hear my rockers, so thinking I have to tighten them. But I'm unsure on the following :
- How do you turn the engine, for drop-dead-center? What socket size fits the main bolt?
- What am I looking for in the window; is it a painted mark? Does it only identify cylinder #1?
- Before adjusting the spacing, do I have to make sure each piston cylinder is at drop-dead- center? How do you determine the d-d-c points for the other cylinders?