RV10Farmer
Member
The folowing is a photo taken from http://www.sdsefi.com/lycoming6.htm, that shows two fuel pumps connected in parallel.
When one of the pumps fails, does it close off the fuel path, or does it leave it open so fuel can still flow in both directions? If a failed pump still allows fuel to flow, would that allow the output fuel from the other good pump to flow back toward the fuel tank, essentially not able to feed the full fuel flow to the engine ?
The SDS website's "Engine component deletion when ordering new engine" section says the fuel pump and pushrod are not needed anymore. I assume it meant only the engine driven fuel pump. The booster pump (not part of the engine order ?) is still needed ?
It is not clear if one still wants a booster pump, and if the booster pump can push fuel through the failed Walbro pumps. This is assuming the extremely unlucky case when both SDS EFI pumps failed.
RV10Farmer
RV10 builder number 42822
When one of the pumps fails, does it close off the fuel path, or does it leave it open so fuel can still flow in both directions? If a failed pump still allows fuel to flow, would that allow the output fuel from the other good pump to flow back toward the fuel tank, essentially not able to feed the full fuel flow to the engine ?
The SDS website's "Engine component deletion when ordering new engine" section says the fuel pump and pushrod are not needed anymore. I assume it meant only the engine driven fuel pump. The booster pump (not part of the engine order ?) is still needed ?
It is not clear if one still wants a booster pump, and if the booster pump can push fuel through the failed Walbro pumps. This is assuming the extremely unlucky case when both SDS EFI pumps failed.
RV10Farmer
RV10 builder number 42822
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