I posted this in the wrong section yesterday and someone guided me here...
I just joined and this is my first time posting a question on a forum. Forgive me if I am not posting my question in the correct place. Also, I am not that familiar with boat terminology so correct me if I am using incorrect terms. Hopefully this makes sense.
I just purchased an 88 Bayliner 195. It has a OMC 3.0 and OMC Cobra outdrive. It needed a pinion bearing (bearing directly behind the pinion gear), so I replaced the two bearings on the shaft inside the upper crankcase, both universal joints and all seals. I went ahead and ordered a new water pump housing, plate, impeller and impeller cage. When installing the impeller, I used vaseline to lubricate it. I did separate the lower from the upper and replace the seals on the top and bottom of the copper pickup tube. After filling the outdrive with oil, and flushing the cooling system (flushing through the "T" just before the thermostat housing on the motor) I put muffs on the lower section over the water inlet and started the motor. The water pressure from the barbed fitting on the back of the water pump housing seems weak. Since the muffs do not seal all that well, I pressed on each side to make them seal better. This did not seem to increase the water pressure from the barbed fitting. I have not had the boat in the water so I thought that I would place the lower in a tub and see if it would pick up any better if it were submerged. When I started the engine, the water pump would not pick up any water. I reapplied the muffs and it started pulling water. Just to test the water passages up to the pump, I let everything drain and turned on the water without the engine running. Water started to drain out of the barbed fitting.
So I really have two questions...
1. Should I be able to submerge the lower in water (water level ~4" above the intake holes on the lower unit) and have the water pump pull the water up? I know the whole outdrive will be much lower once in the water.
2. With the muffs on, there is a steady stream of water from the barbed fitting on the back of the pump housing, but there is not really any pressure. Is this normal or should I have some actual pressure?
Video Link : http://youtu.be/ne7RK-zxoDs
I just joined and this is my first time posting a question on a forum. Forgive me if I am not posting my question in the correct place. Also, I am not that familiar with boat terminology so correct me if I am using incorrect terms. Hopefully this makes sense.
I just purchased an 88 Bayliner 195. It has a OMC 3.0 and OMC Cobra outdrive. It needed a pinion bearing (bearing directly behind the pinion gear), so I replaced the two bearings on the shaft inside the upper crankcase, both universal joints and all seals. I went ahead and ordered a new water pump housing, plate, impeller and impeller cage. When installing the impeller, I used vaseline to lubricate it. I did separate the lower from the upper and replace the seals on the top and bottom of the copper pickup tube. After filling the outdrive with oil, and flushing the cooling system (flushing through the "T" just before the thermostat housing on the motor) I put muffs on the lower section over the water inlet and started the motor. The water pressure from the barbed fitting on the back of the water pump housing seems weak. Since the muffs do not seal all that well, I pressed on each side to make them seal better. This did not seem to increase the water pressure from the barbed fitting. I have not had the boat in the water so I thought that I would place the lower in a tub and see if it would pick up any better if it were submerged. When I started the engine, the water pump would not pick up any water. I reapplied the muffs and it started pulling water. Just to test the water passages up to the pump, I let everything drain and turned on the water without the engine running. Water started to drain out of the barbed fitting.
So I really have two questions...
1. Should I be able to submerge the lower in water (water level ~4" above the intake holes on the lower unit) and have the water pump pull the water up? I know the whole outdrive will be much lower once in the water.
2. With the muffs on, there is a steady stream of water from the barbed fitting on the back of the pump housing, but there is not really any pressure. Is this normal or should I have some actual pressure?
Video Link : http://youtu.be/ne7RK-zxoDs
