Thanks very much for your great Youtube channel. I have learnt a lot from you.
I have a few questions with my Toyota Yaris Lunar 1.0 L, 2008 French built for Ireland. My car is burning oil at high rev, and I need to top up 2 L oil / 1500 Km. Yesterday, I checked the compression test at two stages, as follows:
Stage 1: I warmed up the engineer and did compression test. Compression showed 140 PSI (1st cylinder), 205 PSI (2nd cylinder), and 210 (Third cylinder). I tested at least three times to confirm. I then poured a café spoon engine oil into the 1st cylinder and test again. Pressure raised up to 16 PSI so I think that the ring at the first cylinder had a problem.
Stage 2: I was hoping that the ring might stuck and I tried to release it. I then used the Liqui Moly Proline to flush the enginee running at idle for 40 minutes. After flushing, I filled with new oil, and the amount of smoke is slight reduced now but still burning at high rev. I checked again the compression and the tests showed 205 PSI (1st cylinder), 205 PSI (2nd cylinder), and 210 (Third cylinder). So compression results are fine. I repeated checking for 5 times each cylinder and the results were the same. Which mean that flushing had some positive affect on the 1st cylinder.
My questions are, can a bad ring have a good compression? I was thinking that I would have a bad oil ring in piston but compression rings are OK. And is there any other possibility that my car is still burning oil at high revolution?
Thank you Scotty.