Steve A
Well Known Member
I have esssentially completed my plane and am testing the fuel system. I run fuel through the electric fuel pump
through the fire wall to the fuel pump and get 50 gallons per hour flow as measured with my Grand Rapids EIS. I
confirm this flow as it fills a 5 gallon plastic fuel tank in a few minutes. Now when I hook the fuel hoses up to my throttle
body, I just get fuel barely leaking through. Initially I hooked up aluminum tubing to the hose coming up through the engine
and connecting at the fuel injection spider. When I hook the aluminum tubing to the connection at the bottom of the
throttle body, I get the same low fuel flow. THerefore the obtruction is definitely at the throttle body.
I purchased a Lycoming IO 360 from Van's with horizontal induction system. It appears to me that the throttle
has an obstruction. I am opening the mixture to full open as well as the throttle to full power. A friend has a angle valve
IO 360 and tells me that there is a screen in the throttle but I have not seen one.
Any ideas on how to get the fuel flow to a normal pressure would be appreciated.
Thanks.
Steve Anderson
RV 7A Lafayette, La.
through the fire wall to the fuel pump and get 50 gallons per hour flow as measured with my Grand Rapids EIS. I
confirm this flow as it fills a 5 gallon plastic fuel tank in a few minutes. Now when I hook the fuel hoses up to my throttle
body, I just get fuel barely leaking through. Initially I hooked up aluminum tubing to the hose coming up through the engine
and connecting at the fuel injection spider. When I hook the aluminum tubing to the connection at the bottom of the
throttle body, I get the same low fuel flow. THerefore the obtruction is definitely at the throttle body.
I purchased a Lycoming IO 360 from Van's with horizontal induction system. It appears to me that the throttle
has an obstruction. I am opening the mixture to full open as well as the throttle to full power. A friend has a angle valve
IO 360 and tells me that there is a screen in the throttle but I have not seen one.
Any ideas on how to get the fuel flow to a normal pressure would be appreciated.
Thanks.
Steve Anderson
RV 7A Lafayette, La.