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JFairman JFairman is offline
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Join Date: Jul 2006
Location: S. Florida
Posts: 7,274
Seems you could unscrew the return line where it connects to the gas tank, put a container under it to collect the gas, and turn on the fuel pumps. Then somewhere on the internet there may be a specification on how much gas should come out of the return line in a certain amount of time.
If that information can't be found with internet searches or asking here on the forum then you could try emailing TurboKraft and ask them.

I remember David Cole, bless his heart, had problems with his CIS that he couldn't figure out. He sent his fuel head and control pressure regulator out to be rebuilt maybe more than once but the problem never changed.
The problem ended up being a bunch of old dried gas residue in the narrow metal return line tubing inside the gas tank was clogged or partially clogged.
I don't remember how he cleared out the line inside the gas tank but once he did the problem was fixed.

Maybe you could try pushing some stiff wire like piano string wire into the return line fitting on the gas tank. Rotateing the wire while pushing it in might help if the internal tubing has any curves or bends in it.
Good luck with it.
Old 10-25-2017, 10:36 AM
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