Help! Metal in right wing tank

[jrevens]

Long shot, but the brass fittings on the tanks might be a possible source. If they weren't looked at very carefully before installing, it's possible that there were small shavings inside the bore. I've seen milling residue inside fittings adhering to the light oil film following machining during their manufacture. Sometimes fittings aren't cleaned as good as they should be. Like I said, it's a long shot.

[JoeRuscito]

Im still finding metal. The qty isn't really going up or down. Seems to increase after longer flight. I think Im going to add a line filter to the vent line and possibly the main line to see if I find anything. I just did an oil change and cut the filter, didn't see anything. Im wondering if its worth getting the oil tested? Is this common practice? Any suggestions?

[Shadowrider]

Joe I think I would try and narrow it down. Can you try getting fuel from a different source until your confident it’s not coming from the fuel. Are you doing the fueling? The fill neck on the tanks have a sharp edge the I can see would scrape metal off the fill nozzle. I use a vp gas can and if I let it touch the side it will scrape plastic off the fill nozzle. I could see it doing the same thing with the fuel nozzle If the angle is just right.

[JoeRuscito]

Hey Dustin. I have been fueling at the same place but I have asked them to show me the filters and they have. Also I think I would be seeing debris in both tanks. In addition, I agree the filler could scrape the nozzle, but the nozzle isn't copper/brass I dont believe.

[Shadowrider]

Yeah seems like it would be in both tanks. The IS has two fuel pumps that you alternate which one? Does running either pump and do you still get metal? If it’s not coming from the fuel in the tanks, then it’s got to be fuel system. Do you ever get medal out of the header tank?