Hey everyone,
I did some compression checks on the 7MGE for an issue I thought I might be experiencing with the valves. I actually got some measurements that are low but not outside of what the book outlines as the minimum (128PSI). However, the book does allow for a difference of 14 PSI between cylinders and I do have measurements outside of that. Readings are as follows:
Cylinders:
1-145psi
2-170psi
3-170psi
4-155psi
5-140psi
6-170psi
I poured a skosh of ATF in cylinders 1, 4 and 5 and the compression jumped up to 235, 235 and 265 on those cylinders respectively. Because of this it looks like those piston rings or cylinder bores are damaged or worn.
Here's my question. Seeing as none of the readings were below the 128psi minimum, is this more something that I need to keep an eye on as it may progressively become worse? I guess this is a noob question but i appreciate any insight. Thanks!
The pictures are of my initial readings in order 1-6. I included the spark plug that came out of 5 because I have never seen what looks like carbon burnt on in that spattered pattern before. Also all the plugs were a brown, white-ish color so it looks like it is running lean.
I did some compression checks on the 7MGE for an issue I thought I might be experiencing with the valves. I actually got some measurements that are low but not outside of what the book outlines as the minimum (128PSI). However, the book does allow for a difference of 14 PSI between cylinders and I do have measurements outside of that. Readings are as follows:
Cylinders:
1-145psi
2-170psi
3-170psi
4-155psi
5-140psi
6-170psi
I poured a skosh of ATF in cylinders 1, 4 and 5 and the compression jumped up to 235, 235 and 265 on those cylinders respectively. Because of this it looks like those piston rings or cylinder bores are damaged or worn.
Here's my question. Seeing as none of the readings were below the 128psi minimum, is this more something that I need to keep an eye on as it may progressively become worse? I guess this is a noob question but i appreciate any insight. Thanks!
The pictures are of my initial readings in order 1-6. I included the spark plug that came out of 5 because I have never seen what looks like carbon burnt on in that spattered pattern before. Also all the plugs were a brown, white-ish color so it looks like it is running lean.
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