RVG8tor
Well Known Member
Air Flow Performance manual mentions getting a cheap auto fuel pump and filter to pump some fuel from the tank before hooking up to the primary filter and pump. They mention composite planes which I guess can have tiny contaminant in the tanks.
Did you guys do something similar with RV tanks. Seems the way the tanks are built leave them pretty clean. Mine are QB, I have only inspected with a snake camera and did not find any issues but I could not see in every bay of the tank. I am nearing the time to do the shake down on the fuel system before the first engine start, I certainly want to make sure any crud is out of there before pumping it to the engine.
If you did a right up or log of what you did I and I am sure others would be interested.
Here is what I am thinking:
1. Use some pump filter set up to pump 5-8 gal from the tank out the tank pickup before the fuel selector and filter. Repeat until the fuel flow is clean clean (Dynon EFIS calibration still needs to be done, can this wait until first real fill up?) What is they typical unusable fuel?
2. Hook back to aircraft system, and pump fuel but tap into system before the engine, test flow of primary fuel pump here. After this inspect filer (maybe sue cheap filter for this as well) or just check the primary filter.
3. Hook up to engine and do other flow tests before engine start.
Does this sound about right, I need to cobble together some lines an stuff so researching what I will need. Taping into the fuel system inside the cockpit is a bit tough so that is why I am thinking the first test for major debris should be done at the tank outlet.
Thanks
Did you guys do something similar with RV tanks. Seems the way the tanks are built leave them pretty clean. Mine are QB, I have only inspected with a snake camera and did not find any issues but I could not see in every bay of the tank. I am nearing the time to do the shake down on the fuel system before the first engine start, I certainly want to make sure any crud is out of there before pumping it to the engine.
If you did a right up or log of what you did I and I am sure others would be interested.
Here is what I am thinking:
1. Use some pump filter set up to pump 5-8 gal from the tank out the tank pickup before the fuel selector and filter. Repeat until the fuel flow is clean clean (Dynon EFIS calibration still needs to be done, can this wait until first real fill up?) What is they typical unusable fuel?
2. Hook back to aircraft system, and pump fuel but tap into system before the engine, test flow of primary fuel pump here. After this inspect filer (maybe sue cheap filter for this as well) or just check the primary filter.
3. Hook up to engine and do other flow tests before engine start.
Does this sound about right, I need to cobble together some lines an stuff so researching what I will need. Taping into the fuel system inside the cockpit is a bit tough so that is why I am thinking the first test for major debris should be done at the tank outlet.
Thanks
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