Commando C2
Petty Officer 3rd Class
- Joined
- Oct 3, 2009
- Messages
- 80
Hello Everyone
This is my first post but been reading through many posts and threads to accumulate knowledge.
I am having a problem with my 1989 15hp Evinrude short shaft 2 stroke.
She wasnt pumping any water so have managed to drop the lower unit successfully and replace the impeller (with good info from this site) and installed it in the correct direction with the key in place.
On start up she still doesnt pump any more water. There was a good pee stream for about 3 seconds then dribbles.
I will be looking into any blockages in the pipes but am wondering about a couple of things?
The importance of the water pump housing plate? Should it still pump water without this plate?
There was no gasket between the pump housing and the metal part of the gearcase housing. Should there be one?
I see on a diagram that there should be an impeller plate housing that sits between the housing and the gearcase.
What difference would it make not having one there?
Does the housing rely on a tight seal to maintain water pressure in the pump housing? i am assuming that as the whole gearcase is in the water it shouldnt make any difference to this sealing.
Just not sure where to look next but am gonna pump some compressed air back through the pee hole pipe and up the water tube when i drop the gearcase next time.
Is it difficult to clear the cooling pipes/ducts in the cylinder head without removing the engine block?
Many thanks
Have posted this under another thread in a reply but have been wisely advised to start a new one so here it is.....
Nathan
This is my first post but been reading through many posts and threads to accumulate knowledge.
I am having a problem with my 1989 15hp Evinrude short shaft 2 stroke.
She wasnt pumping any water so have managed to drop the lower unit successfully and replace the impeller (with good info from this site) and installed it in the correct direction with the key in place.
On start up she still doesnt pump any more water. There was a good pee stream for about 3 seconds then dribbles.
I will be looking into any blockages in the pipes but am wondering about a couple of things?
The importance of the water pump housing plate? Should it still pump water without this plate?
There was no gasket between the pump housing and the metal part of the gearcase housing. Should there be one?
I see on a diagram that there should be an impeller plate housing that sits between the housing and the gearcase.
What difference would it make not having one there?
Does the housing rely on a tight seal to maintain water pressure in the pump housing? i am assuming that as the whole gearcase is in the water it shouldnt make any difference to this sealing.
Just not sure where to look next but am gonna pump some compressed air back through the pee hole pipe and up the water tube when i drop the gearcase next time.
Is it difficult to clear the cooling pipes/ducts in the cylinder head without removing the engine block?
Many thanks
Have posted this under another thread in a reply but have been wisely advised to start a new one so here it is.....
Nathan