kaweeka
Well Known Member
I have an IO 320 with 730 hours. The plane has run well and shows no change in power or oil consumption. Last Blackstone analysis from November noted an increase in Chrome and iron along with increased blow by. Something that was notably different from the previous oil change. (I send every oil change to Blackstone). I started my annual early this year due to my upcoming extended trip through the Caribbean. I ran the engine for about 15 minutes to get the oil temp to 100F and about 2 hours later, did my compression check. Cylinder #1 would only get 62/80 where last year it was 76/80. All the other cylinders were about the same as last year, 76-78/80. The cylinders are Superior Millennium steel cylinders. I checked the compression several times. I could clearly hear air from the oil filler tube. Soooooo, what to do? If I was staying around the area, I think I would wait a bit since I am home and can replace at any time. However, I'm flying about 8,000 miles and away from home for 3 months. I took everything off around the cylinder to remove it but stopped, thinking I should listen to people with experience rather than yield to my " if it's not right it's wrong" mind set and replace just from a knee jerk reaction. I need some advice please.
Thanks,
David
Thanks,
David