Ok so I started out just doing some maintenance on my 85 fj60 because I snapped my throttle cable on the Webber 38. So I fixed that with factory cable and Edelbrock universal termination kit, and tuned the carb.
Then moved on the swapping out my factory distributor and NGK plugs and wires that are about 6 years old to the fire cracker distributor from TPI and Toyota plugs and wires I have had sitting around for a year or so.
Now keep in mind the truck runs perfect I’m on 37s with 4.11 and have no problems it doesn’t smoke, oil stays constant between every oil change (12k) adding a 1/2 quart total maybe, It does leak oil front timing cover, rear oil pan, and small amounts in the inspection cover. Stays right at the first 1/4 tick on temp even when off-road doesn’t Move much here in Florida at 95-100 outside stays consistent.
So for some reason I wanted to check the compression!
So The truck had been sitting in the drive when I got home from work, I cranked it up. Let it idle for 10 min. Then pulled all the plugs they look old, big gaps, dirty, hot, but not wet and didn’t smell like oil or fuel. Just used So all and all ok. I disconnected all the distributor wires except the two vacuum lines.
Proceeded to do a dry test and I didn’t know there was a difference between wet and dry At this time.
I hooked up the gauge hand tight and bumped the ignition for a second on each cylinder. The gauge read 90 everytime. Well that’s bad I’m looking at my FSM and it says between (high 149) and (low 114). On Cylinder number 2 I had left the ignition on for about 5 seconds and the gauge read 135 so I’m not doing it right stoped read thru a ton of posts Q/A. And I have a firm grasp on how to now! But still have a few questions can you guys take a look and tell me what you think. Thank in advance. Austin.
Questions
1. How long do I keep the ignition on? I know from reading several posts. Anywhere for 6 to 10 rotations but how long is that. Because the longer I I keep the ignition on the pressure goes up from instant 90 to 134. In about 4 to 5 once that cylinder strokes? Would it keep going up or does the high number reflect my actual compression?
2. How much oil give or take mostly take do I need to inject into the cylinder for a wet test.
3. What is the best method to do a wet test. Do I need to put the correct amount of oil in all 6 cylinders. Then come back and start the test 1-6. Or start with (#1 inject oil, test) (#2 inject oil, test) (#3 injection oil test)? And so on?
Then moved on the swapping out my factory distributor and NGK plugs and wires that are about 6 years old to the fire cracker distributor from TPI and Toyota plugs and wires I have had sitting around for a year or so.
Now keep in mind the truck runs perfect I’m on 37s with 4.11 and have no problems it doesn’t smoke, oil stays constant between every oil change (12k) adding a 1/2 quart total maybe, It does leak oil front timing cover, rear oil pan, and small amounts in the inspection cover. Stays right at the first 1/4 tick on temp even when off-road doesn’t Move much here in Florida at 95-100 outside stays consistent.
So for some reason I wanted to check the compression!
So The truck had been sitting in the drive when I got home from work, I cranked it up. Let it idle for 10 min. Then pulled all the plugs they look old, big gaps, dirty, hot, but not wet and didn’t smell like oil or fuel. Just used So all and all ok. I disconnected all the distributor wires except the two vacuum lines.
Proceeded to do a dry test and I didn’t know there was a difference between wet and dry At this time.
I hooked up the gauge hand tight and bumped the ignition for a second on each cylinder. The gauge read 90 everytime. Well that’s bad I’m looking at my FSM and it says between (high 149) and (low 114). On Cylinder number 2 I had left the ignition on for about 5 seconds and the gauge read 135 so I’m not doing it right stoped read thru a ton of posts Q/A. And I have a firm grasp on how to now! But still have a few questions can you guys take a look and tell me what you think. Thank in advance. Austin.
Questions
1. How long do I keep the ignition on? I know from reading several posts. Anywhere for 6 to 10 rotations but how long is that. Because the longer I I keep the ignition on the pressure goes up from instant 90 to 134. In about 4 to 5 once that cylinder strokes? Would it keep going up or does the high number reflect my actual compression?
2. How much oil give or take mostly take do I need to inject into the cylinder for a wet test.
3. What is the best method to do a wet test. Do I need to put the correct amount of oil in all 6 cylinders. Then come back and start the test 1-6. Or start with (#1 inject oil, test) (#2 inject oil, test) (#3 injection oil test)? And so on?