Manchu16
Active Member
I was hoping to get some troubleshooting help. O-320, carbed, 150 HP. 500 Hrs since OH. I am concerned I have a significant increase in oil consumption. Been pretty consistent over 250 hours.
Flew on Sunday AM. Preflight was normal. Just over 5QT on the stick. Flew 1.2HR in 80* OAT. Usually burn 1Qt in 7 Hrs.
Monday night. Preflight showed 4QT on the stick. Normally my oil shows about 1 - 1.5 QT lower after a few hours cooling down. Normally I dont fly back to back days, so contemplated that some oil was still slowly making it was back down to the sump. Regardless I added another QT to be safe.
Flew .6 HR, 81* OAT. I noticed at 2350 RPM, leaned to max RPM, that my egt on #3 was 100* lower than the hottest. Normally I see a 50* spread. All other gauges were normal.
After landing, I did a mag check and the engine ran like **** on the right mag. My neighbor has my tool cart for his condition inspection, so I am going tomorrow to pull the plugs. After pulling the cowl I noticed…
Left exhaust inside was white, while right was dry and sooty (probably a bad plug in 1 or 3 bottom)
Oil was lower on the dip stick than I expected, down about 2 QT.
I noticed a light coat of oil on the bottom right side of the engine, on the bottom of the front accessories and a misting on the bottom of the right side of the cowl. No where near a qt, but way more than should be there after 50 hours. The belly has a light sooting, nothing more than expected for not cleaning the bottom in 50 hours. No drips hitting the floor of the hangar. Oil breather looks normal on the inside.
Dry behind the flywheel (Main seal)
When I pull the lower plug in 3 and 1, I am assuming one will be fouled. Anything else I should look for? The right side oil return hoses look wet, could I puke that much oil out of one of those. Anything else I should look at?
Flew on Sunday AM. Preflight was normal. Just over 5QT on the stick. Flew 1.2HR in 80* OAT. Usually burn 1Qt in 7 Hrs.
Monday night. Preflight showed 4QT on the stick. Normally my oil shows about 1 - 1.5 QT lower after a few hours cooling down. Normally I dont fly back to back days, so contemplated that some oil was still slowly making it was back down to the sump. Regardless I added another QT to be safe.
Flew .6 HR, 81* OAT. I noticed at 2350 RPM, leaned to max RPM, that my egt on #3 was 100* lower than the hottest. Normally I see a 50* spread. All other gauges were normal.
After landing, I did a mag check and the engine ran like **** on the right mag. My neighbor has my tool cart for his condition inspection, so I am going tomorrow to pull the plugs. After pulling the cowl I noticed…
Left exhaust inside was white, while right was dry and sooty (probably a bad plug in 1 or 3 bottom)
Oil was lower on the dip stick than I expected, down about 2 QT.
I noticed a light coat of oil on the bottom right side of the engine, on the bottom of the front accessories and a misting on the bottom of the right side of the cowl. No where near a qt, but way more than should be there after 50 hours. The belly has a light sooting, nothing more than expected for not cleaning the bottom in 50 hours. No drips hitting the floor of the hangar. Oil breather looks normal on the inside.
Dry behind the flywheel (Main seal)
When I pull the lower plug in 3 and 1, I am assuming one will be fouled. Anything else I should look for? The right side oil return hoses look wet, could I puke that much oil out of one of those. Anything else I should look at?
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