Good Day All,

Just have a fuel bladder replaced in a 182 73P. Bladder was only 6 years old....and appently had multiple leaks along the seams. But I digress.......

I now have very uneven fuel burn between the two tanks. After landing there was 25 gallons left in the "old non replaced tank on pilot side"....and only about 1/2 gallon left in the "new replaced copilot side" tank. The fuel burn was about right for the time in the air....but the uneveness is a bit ridiculous I think.

Any suggestions or thoughts on what might be going on?

Thanks

Cheers

Macdon221

I have a Cessna 182 P and when I bought the plane was the same as yours.
Solution is simple.
The vent has to have an exact milimetrical measure.
Send me your e mail addresse and I can send you the tech note from cessna.
Its an easy fix and doesnt cost any money

Ditto. The placement was meant to be a balance between ice vulnerability and fuel system operation. If you lower the vent line a tad (just inside inspection plate, simple clamp) to get it out of the fairing turbulence, it might fix the problem.

Thanks Motoadve

See your PM's. If there is an issue let me know.

Any other accounts of this problem??

Macdon221

That is almost certain to be the issue. "Almost", because there can be issues such as leaky check valves, etc. But the most common problem is the location of the vent, tending to pressurize the tank and force the fuel out of it rather than let it gravity feed. The Cessna Pilots Association has a handout, and I was given a copy of it by Butch Hartwig, manufacturer of the Monarch fuel caps, during a discussion at OSH. It indicates that the location of the fuel vent inlet is really critical for evenly drawing from the tanks on "both". Like most of the stuff I pick up at OSH, I've chucked it, but if you can turn up that drawing, it'll help you locate the vent.

Cary

We are dealing with this on a few aircraft at work. We found that the internal check valves, attached to the vent were sticking. The vents I. The fuel caps were also somewhat plugged. This uneven fuel burn has actually caused quite a headache as we routinely land with a small (more than legal reserves) but low enough to make some concerned.

Propeller 26,

Are you able to elaborate in more detail on the internal check valves sticking?


Thanks

Macdon221

Macdon,

We are experiencing the uneven fuel burn on multiple 206's, but I believe that the vents on the 182 are similar if not the same. Inside the wing attached to the vent that the other post were referencing is a small ball check valve. The valve is supposed to regulate the pressure in the tanks, but ours were found to be gummed up and took considerable amount of compressed air to open them. When we removed them, we found that the blue dye from 100ll had gummed up the valve and was causing them to stick. After we replaced both valves, the problem was mostly solved. It went away completely when we replaced the rubber gasket on the fuel caps, which we believe allowed the system to have the correct amount of vacuum. Hope this helps.

Does anyone have a source for the fuel vent check valves?
I was qouted $300.00 each!

Fuel selector puts you in charge of even burn. Cheap too.