Rjmvmi1998
Active Member
I have less than 20 hrs of flight time on my recently purchased RV10. All of my time previous has been on high wing gravity feed systems. I have noticed on several occasions that my fuel pressure will start to fluctuate on long climbs and decent. Fuel flow and engine power seem to be unaffected. It happens regardless of which tank is selected. It always stabilizes at cruise. The pressure normally runs at 19 to 24. When it fluctuates, it can goes as low as 6 psi for brief periods. Turning on the electric pump immediately restores normal pressure so this leads me to believe it’s not a indication problem.
The transducer is located at the top of the firewall. I’ve read that two things can cause this. Air entering the system, or more common, fuel vapor collecting in the system. Some airplanes, particularly Diamonds claim this is normal and you should run the boost pump to clear the vapor until normal pressure returns.
Is this common in the RV10 and is it normal? If not, I will start checking for leaks, clean filters and screens and possibly have the mechanical pump overhauled.
Thanks
The transducer is located at the top of the firewall. I’ve read that two things can cause this. Air entering the system, or more common, fuel vapor collecting in the system. Some airplanes, particularly Diamonds claim this is normal and you should run the boost pump to clear the vapor until normal pressure returns.
Is this common in the RV10 and is it normal? If not, I will start checking for leaks, clean filters and screens and possibly have the mechanical pump overhauled.
Thanks