95 Camry, 5sfe, 247,000miles
I did a compression test this afternoon. The results below are the readings after about 6-7 cranks. For all cylinders, the 1st crank was about 70psi, and then gradually creeped up crank-by-crank until reaching the number below. As many of you probably know, the acceptable range listed in factory manual for this engine is 142-178psi.
Initial test:
Cylinder #1: 145psi
Cylinder #2: 145
Cylinder #3: 145
Cylinder #4: 140
(I did this about 2 years ago, all cylinders were approx 155)
After adding a bit of oil through the spark plug hole:
Cylinder #1: 180
Cylinder #2: 185
Cylinder #3: 185
Cylinder #4: 175
I think I can assume my piston rings are shot? Should I also do a leak down test? I'm trying to figure out as much as possible about what's going on inside my engine, since I'm contemplating an overhaul in the near future.
For what its worth, I also did an intake vacuum test recently and posted the results here:
http://http://www.toyotanation.com/forum/showthread.php?t=374568
Any info, thoughts, comments are appreciated. Thanks in advance!
I did a compression test this afternoon. The results below are the readings after about 6-7 cranks. For all cylinders, the 1st crank was about 70psi, and then gradually creeped up crank-by-crank until reaching the number below. As many of you probably know, the acceptable range listed in factory manual for this engine is 142-178psi.
Initial test:
Cylinder #1: 145psi
Cylinder #2: 145
Cylinder #3: 145
Cylinder #4: 140
(I did this about 2 years ago, all cylinders were approx 155)
After adding a bit of oil through the spark plug hole:
Cylinder #1: 180
Cylinder #2: 185
Cylinder #3: 185
Cylinder #4: 175
I think I can assume my piston rings are shot? Should I also do a leak down test? I'm trying to figure out as much as possible about what's going on inside my engine, since I'm contemplating an overhaul in the near future.
For what its worth, I also did an intake vacuum test recently and posted the results here:
http://http://www.toyotanation.com/forum/showthread.php?t=374568
Any info, thoughts, comments are appreciated. Thanks in advance!
