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Hello again all :) Having solved the fuel flow problem, we're now looking at the fuel contents problem. The RV8 has capacitance plates fitted and, to be honest, we're truly underwhelmed by the accuracy of them. We've calibrated them a few times and have even plotted graphs of the voltage...

Just to close this one off (in case someone ever searches for the same symptoms), it turns out it was nothing really to do with electricky things but all down to a knackered mechanical fuel pump diaphragm, which was allowing air to enter the system. Well done Kurt for the air diagnosis ;) This...

Thanks for your reply, Kurt. We've certainly not seen any evidence of fuel leaks but I do understand your thoughts on air getting in without fuel getting out. Air bubbles were our first consideration and they do offer a decent explanation regarding the behaviour of the fuel flow readings. It...

When I first started test flying my friend’s new RV8 all seemed well with the fuel flow on the Dynon Skyview. The numbers were sensible and just what I would expect from an IO-360. The fuel transducer is the classic Red Cube and the default pulses settings returned normal readings. A very...