Lan Vinh Do
Well Known Member
Updated
I just did a oil change and clean and gap the sparks plugs. I always use the scope when I remove spark plug. I found something that could look like a beginning of a hot spot on a valve cylinder no 1 ( upper part of the valve on first picture) ?
Engine run fine. Compression is 78. I run on phillips 20-50 and add. cam guard at each oil change since many years. Always update all my flight on savvy analysis and everything is normal.
I need advice on these picture. The last one was taken. in march. 40hre before.
I run 20-40 lean of peak normally at altitude above 6000ft since 2 years.
Is it early sign od exhaust valve failure of just valve that is cleaning up because of the lean of peak operation? What should i do
- Monitor in another 40hre?, do nothing?, immediate action?
Thank You for your advice
PICTURE OF YESTERDAY ( UPPER PART OF THE VALVE ON THE FIRST PICTURE)
LINK TO THE ALBUM. OCTOBER 2020
https://photos.app.goo.gl/kc3jTbMenp1uAF2U6
PICTURE OF MARCH 2020
https://photos.app.goo.gl/qhvhYtPHshb6yhrS8
I just did a oil change and clean and gap the sparks plugs. I always use the scope when I remove spark plug. I found something that could look like a beginning of a hot spot on a valve cylinder no 1 ( upper part of the valve on first picture) ?
Engine run fine. Compression is 78. I run on phillips 20-50 and add. cam guard at each oil change since many years. Always update all my flight on savvy analysis and everything is normal.
I need advice on these picture. The last one was taken. in march. 40hre before.
I run 20-40 lean of peak normally at altitude above 6000ft since 2 years.
Is it early sign od exhaust valve failure of just valve that is cleaning up because of the lean of peak operation? What should i do
- Monitor in another 40hre?, do nothing?, immediate action?
Thank You for your advice
PICTURE OF YESTERDAY ( UPPER PART OF THE VALVE ON THE FIRST PICTURE)
LINK TO THE ALBUM. OCTOBER 2020
https://photos.app.goo.gl/kc3jTbMenp1uAF2U6
PICTURE OF MARCH 2020
https://photos.app.goo.gl/qhvhYtPHshb6yhrS8
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