Mercruser alpha 1 gen 1 stern drive issues

[Robnsac1]

I have a issue with my merc cruiser alpha 1 generation 1 Stern drive I've replaced the Impeller and I still cannot get it to kick water this is a 1987 marlin with a straight 4 cyl .
It runs great I have token the lower half off 3 times to see if I can get to fix i Have ran water to all the hoses I have change the impeller and nothing I do I can get it to kick water for no reason I have disconnected the hoses after I ran it to see if there's water and there's none I don't want burn up my boat but I don't know what else to do and thing goes together fine if you have any help please let me know if you need more information on the boat or whatever I'm happy to post anything I can

 

[boattoy]

What do you mean kick water? Pretty simple system . Impeller pumps water to the upper half of the drive . Goes into the hole in the bell housing , a rubber hose feeds it to the transom and then it pumps into the thermostat area to feed the engine. Usually through an oil cooler or power steering cooler first if applicable. If you have either maybe one of the coolers is clogged .

 

[Bondo]

I have a issue with my merc cruiser alpha 1 generation 1 Stern drive I've replaced the Impeller and I still cannot get it to kick water this is a 1987 marlin with a straight 4 cyl .
It runs great I have token the lower half off 3 times to see if I can get to fix i Have ran water to all the hoses I have change the impeller and nothing I do I can get it to kick water for no reason I have disconnected the hoses after I ran it to see if there's water and there's none I don't want burn up my boat but I don't know what else to do and thing goes together fine if you have any help please let me know if you need more information on the boat or whatever I'm happy to post anything I can

Ayuh,...... Welcome Aboard,........Did you replace just the impeller, or the housings too,..??
If not the housings, what did the ones used look like,..??
How are you feeding water to the boat,..??
Muffs, or,..??

 

[Robnsac1]

Yes mufs and kicks water i meam pumps water. I dont know about oil or power stering cooler ill check tomorrow . And i changed the impeller only all else like housing looked good no cracks or nothing

 

[Robnsac1]

Yes mufs and kicks water i meam pumps water. I dont know about oil or power stering cooler ill check tomorrow . And i changed the impeller only all else like housing looked good no cracks or nothing

 

[Robnsac1]

Yes mufs and kicks water i meam pumps water. I dont know about oil or power stering cooler ill check tomorrow . And i changed the impeller only all else like housing looked good no cracks or nothing. I did run water thru all spots water should run including pulling off a hose ( radator hose is only way i know to call them ) and added water there it still when running it does not pump water out of the correct spot and is not going thru the motor
I do so appreciate all the help given

 

[Bt Doctur]

do you see water leaving the drive ? You may have missed the copper tube into the guide tube

 

[Robnsac1]

The copper tube has a plastic one attached and when i installed the bottom to the upper i was making sure they went together in to the upper part of drive

 

[Robnsac1]

Now water was coming out the back of the drive in middle area

 

[Faztbullet]

Take the drive back off, clean all that silicon and sealer off bell housing and drive, then install the correct gasket and transfer o-ring.