Originally Posted by Shihua Zheng
Originally Posted by Ronald Stewart
Originally Posted by Shihua Zheng
Why they call Lycoming sticky then...


I've never heard Lycoming called sticky.
Who is the "they" ?


Read it in this avweb article.
https://www.avweb.com/ownership/dealing-with-stuck-valves/


I believe that article is about big bore engines.
Originally Posted by Avweb article
Lycoming TIO-541 engines installed in the Beechcraft Duke usean oil-cooled exhaust guide. Cooling oil circulates in a groovebetween the exhaust guide and the guide boss. If this groove cokesup with oxidized oil and becomes blocked, the exhaust guide andvalve overheat and stick.


Did you miss this line?
Originally Posted by Avweb article
We do see a tendency for intake valves to stick on Continental engines in the O-200,O-300 series.

As Hung said, I've been around this forum and 150's and 152's for a long while now and I think only 1 time I have heard of an 0-235 sticking a valve and numerous O-200's that have.

Ron Stewart
N5282B
KSFZ


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