Sounds like a good place to start.


"Robert M. Gary" wrote in message
oups.com...
|
| Jim Macklin wrote:
| Do a differential compression test and pay attention to
| valve guides play and seals, often the oil is not being
| blown out the breather, but is leaking around the valves
| [even one valve] and burning. If you have high leakage
| during the differential compression test, you're getting
too
| much blow-by and that is raising the crankcase pressure
and
| blowing oil out the breather tube. If the breather is
| blocked, it will blow the main seal and you'll see oil
| behind the prop. If the oil level goes down fast and
then
| stabilizes, you may have a dipstick that is not
calibrated
| properly and you're over filling.
|
|
| I just go ahold of my mechanic (he's been out of town). He
suggests
| another compression check (although we just did one last
month) and a
| boroscope. I'd be happy with the boroscope since I've been
meaning to
| do that for quite some time. He also suggested keeping an
oil log since
| I've never actually tracked oil usage.
|
| -Robert
|