I found bilge hose came off from strainer and that was damaged by coupling.
Bilge strainer is locate under the coupling.
I found damaged piece of hose and tube on the bottom of engine room.
I removed coupling cover for replace damaged hose then I heard sound something fallen.
It was flushing connector, I found just under the coupling.
Other side was damaged like a cut half.
So customer dropped this connector before and when he ride may be after jump or something this connector stuck between coupling and coupling cover like a above picture. Also then this connector hit and pick of bilge hose.
