Is it ever normal to have oil sitting in a cylinder discovered with a bore scope? I have excessive oil usage and borescoped my Titan IO 370 and discovered oil sitting in the bottom of two cylinders.
Thanks
Is it ever normal to have oil sitting in a cylinder discovered with a bore scope? I have excessive oil usage and borescoped my Titan IO 370 and discovered oil sitting in the bottom of two cylinders.
Thanks
I would post a picture but have been unable to in the past. Titan 370 with 230 hours on the engine. 5 hours per court of oil led me to borescope, it never changed from day 1. I saw oil pooling in two cylinders. That led me to have the engine honed and new rings put on. 20 plus hours into the new break in, the oil consumption went from 1 quart per 2 hours to improving to about 1 quart in 4 hours, now getting worse, 1 quart per 1.5 hours. They are Ni cad cylinders. I followed the new break in procedures. I used Phillips 20W-50 based on Titan's recommendation for the first break in and pure mineral oil on the second break in based on the engine mechanics recommendation. My engine temps are much improved on the second break in and it seems to be running well. I e-mailed Lycoming and they said Ni cad cylinders can take up to 50 hours to break in, I'm just getting discouraged since they appeared to improve and are now getting worse after 20 plus hours.
I'm lucky in that my engine uses very little oil but if I put in 7 quarts, it will seem that she drank an entire quart in 1 hour of flight until it gets down to 6 quarts where she is comfortable at . . . She just doesn't like her belly to be too bloated
I would post a picture but have been unable to in the past. Titan 370 with 230 hours on the engine. 5 hours per court of oil led me to borescope, it never changed from day 1. I saw oil pooling in two cylinders. That led me to have the engine honed and new rings put on. 20 plus hours into the new break in, the oil consumption went from 1 quart per 2 hours to improving to about 1 quart in 4 hours, now getting worse, 1 quart per 1.5 hours. They are Ni cad cylinders. I followed the new break in procedures. I used Phillips 20W-50 based on Titan's recommendation for the first break in and pure mineral oil on the second break in based on the engine mechanics recommendation. My engine temps are much improved on the second break in and it seems to be running well. I e-mailed Lycoming and they said Ni cad cylinders can take up to 50 hours to break in, I'm just getting discouraged since they appeared to improve and are now getting worse after 20 plus hours.