I have a 2002 Toyota Corolla, 1.8L engine. It is burning a lot of oil, maybe like a quart every 700 miles or so. If I'm not mistaken, I also think it is losing coolant as well (was far below low when I checked it recently). I checked the compression on the engine and got the following results. My Haynes manual says that the minimum compression should be about 145, and the maximum be about 210.
Cylinder: #1 #2 #3 #4
PSI: 190 190 180 192
I saw that cylinder #3 was slightly less, and took more turns to build up than the others. It would go above 100 really quickly, and then take about 8 more jumps until it reached 180. The other cylinders would take about 5 jumps to reach maximum compression. I added some oil into #3 and retested, but I got over 270 psi! I figured I put in too much oil, so I vacuumed most of it out. (I only put in about 2 1/2 caps full of oil.) I then retested and got over 240, still climbing. I didn't want to push it much more.
I'm wondering why the wet compression is so much higher than it was, and why it's way higher than the normal maximum pressure. Also why would every cylinder's compression be so high yet burn so much oil? Thanks, Ben.
Cylinder: #1 #2 #3 #4
PSI: 190 190 180 192
I saw that cylinder #3 was slightly less, and took more turns to build up than the others. It would go above 100 really quickly, and then take about 8 more jumps until it reached 180. The other cylinders would take about 5 jumps to reach maximum compression. I added some oil into #3 and retested, but I got over 270 psi! I figured I put in too much oil, so I vacuumed most of it out. (I only put in about 2 1/2 caps full of oil.) I then retested and got over 240, still climbing. I didn't want to push it much more.
I'm wondering why the wet compression is so much higher than it was, and why it's way higher than the normal maximum pressure. Also why would every cylinder's compression be so high yet burn so much oil? Thanks, Ben.