jabsco pump question

[capitan72]

OK, I am having trouble getting water to the engine. Tested everything and think I have found the problem. After putting a new impeller in the raw water pump I can blow through it both ways with no resistance, even when I spin the impeller shaft. There are no leaks in the housing. I looked but found no scoring inside, I am stumped.

This is my problem right?

Thanks for you input.

 

[capitan72]

Re: jabsco pump question

I guess I should clarify that I think something is wrong with the pump and it should be replaced.

 

[Maclin]

Re: jabsco pump question

What model and year of engine/drive. How are you spinning the impeller shaft? Is it on the bench or do you mean you are blowing on it while installed?

 

[capitan72]

Re: jabsco pump question

The pump is on the bench. Just wanted to confirm my thought that air shouldn't flow through the pump....ever, on a self priming pump. Its a chevy/volvo 350 with a volvo 280.

 

[captmello]

Re: jabsco pump question

I think your right. Is the impeller the correct width? It should go front to back with no gap between the cover and the impeller.