My skyview indicates fluctuating fuel flow at steady state cruise. I have an RV7 with a Lycoming IO360. The fuel flow sender is an EI FT-60 "Red Cube" mounted in the vertical portion of the fuel line between the fuel injector servo and the "spider". At steady state cruise it continually fluctuates between 10 and 19 gph. It should be reading around 8.5gph. It has done this since the first flight. Is there a way to check the sender myself or do I need to send it to the manufacturer?
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Fuel Flow Fluctuation
- Thread starter oldpharte
- Start date
- Joined
- Mar 23, 2005
- Messages
- 13,226
Does the flow change with throttle changes? Is it steady at idle? Does the boost pump make any difference?
My first thought is about your position of the "red cube". I was told that if I mount it on the engine, the engine might be cause vibrations, that I needed to mount it on the firewall.
That is only an opinion of one person, it sounded ok. So I mounted mine on the firewall.
Dave
That is only an opinion of one person, it sounded ok. So I mounted mine on the firewall.
Dave
- Joined
- Mar 23, 2005
- Messages
- 13,226
The resistor is for P-leads and RPM, not fuel flow.
We have our fuel flow mounted to the engine, in the same place on an IO-360 without any issues, and we know of lots of other installs like that, so I don't think that is obviously an issue.
We have our fuel flow mounted to the engine, in the same place on an IO-360 without any issues, and we know of lots of other installs like that, so I don't think that is obviously an issue.