RVG8tor
Well Known Member
I was finishing up my annual and was changing the spark plug so I took the opportunity to use my dental cam to look in the cylinders again. I did this before but was concentrating on the exhaust valves.
Today I looked at the intake valves as well and I find this black goo on the underside of the valves. I am not having any engine issues but wondered if I should be concerned. All 4 intake valves have the same look. I did keep the engine on a stand while building and would roll it 90 degrees and leave it for a while and continue this unit the engine and done a complete roll. I don't know if this might be related. I know did get some oil into one intake tube, it was then that I realized I was leaving the roll at each 90 point too long. I have 161 hours on the plane and it has been flying for 1 year.
Here is a picture, the camera is a bit damage, that is what the black streaks are from.
Cheers
Thanks for any help.
Today I looked at the intake valves as well and I find this black goo on the underside of the valves. I am not having any engine issues but wondered if I should be concerned. All 4 intake valves have the same look. I did keep the engine on a stand while building and would roll it 90 degrees and leave it for a while and continue this unit the engine and done a complete roll. I don't know if this might be related. I know did get some oil into one intake tube, it was then that I realized I was leaving the roll at each 90 point too long. I have 161 hours on the plane and it has been flying for 1 year.
Here is a picture, the camera is a bit damage, that is what the black streaks are from.
Cheers
Thanks for any help.