Search results

Thought I'd give an update. Neve figured out what it was. Pretty much went away on its own. Coincidentally I'm overhauling three cylinders.

That filter is clean.

Blew air through the vent, flows fine. I can suck air back out of the tank but it's really slow. Ended up pulling the check valve out and it looks fine.

Checked the fuel vent and the vent check valve in the tank and it was all good. I don't have an engine monitor.

I get a puff of air out of the tanks when i refuel after flying.

O-470 is carbureted. Just flew to lake tahoe and now it's running rich enough that it's running rough. Pull the mixture out excessively and it runs great. I think that tells me it's the carb.

None of the induction system was messed with at annual.

Ran fine before the annual. Just had the plug rechecked today and they also pressure and resistance tested the plugs. The mechanic said the idle mixture wasn't adjusted right but I'm not sure if that could be a problem or not.

Pressurized the induction system and didn't find any leaks. Didn't find anything in the carb either. Seems to come and go but gets fairly consistent at altitude.

Any idea what an manifold pressure a o470 should idle at?

Induction leak could explain it. All rubbers were new about 200 hours ago. Everything to do with the mixture control is right. I can still repeat the problem at 23" at lower altitude.

No engine data other than fuel flow. Plugs, filter and mags look good. Fuel flow at 23" is only 13 full rich, that can't be right, can it?

3 hours after it was annualed. Plugs are good, 1600 tt, probably 25 years in the engine. Borescope has been done, verything looks great. I found a little junk in the fuel screen on the carb but not enough to cause a problem.

I flew it back to Washington and didnt find any water in it when I got there either.

I didn't find so much as a drop off water in either tank, the gascolator or the carb bowl.

New to the forum, this is my first post. I have a 182A tail wheel. Flying over oregon yesterday it started running rough, pushed the mixture in, no change, checked carb heat, nothing but a power loss. Mag check, not much change, fuel on both no change. Messed with throttle, not much of a...