Looking at the front of the engine, the pump is mounted next to the crank on outside of the timing chain cover. Pump inlet and outlet run horizontal with the inlet coming from the right side of the motor. Getting no pumping when testing in barrel full of water that covers the cavitation plate. Old impeller was trashed, and I have replaced with new.
Now, in all my research on this subject, it appears you cannot have a breach (air leak) anywhere in the lines that are involved here. I've read about the inlet pipe located on the outdrive, but before I inspect that, I would like to ask about the inlet and outlet connections on the pump itself. These connections are copper tubes that merely slide into the pump and are sealed with what appear to be rubber grommets/seals inside the pump housing. It seams as though this is causing the breach. Do these tubes get soldered into the pump? Is there a sealant used to seal these connections? Thank you.
Now, in all my research on this subject, it appears you cannot have a breach (air leak) anywhere in the lines that are involved here. I've read about the inlet pipe located on the outdrive, but before I inspect that, I would like to ask about the inlet and outlet connections on the pump itself. These connections are copper tubes that merely slide into the pump and are sealed with what appear to be rubber grommets/seals inside the pump housing. It seams as though this is causing the breach. Do these tubes get soldered into the pump? Is there a sealant used to seal these connections? Thank you.