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-   -   Strainers not filling all the way (https://www.offshoreonly.com/forums/general-q/355432-strainers-not-filling-all-way.html)

Sonichunter 07-18-2018 06:17 AM

Strainers not filling all the way
 
Over the winter I pulled transom assembly’s to replace steering pins. While they were off, I had them completely gone through. Water lines replaced with a different style(newer) water necks. Replaced impellers and housings as well. Now my strainers don’t completely fill up anymore. Water temp, oil temp, and pressures have all been fine. Plenty of water out of the exhaust. Any ideas why they would only fill 1/2 to 3/4 now? That is after a run as well. They used to do it just at the dock until I got the engines moving, then they filled completely.

BUP 07-18-2018 01:02 PM

air entering into the water side cooling system ? Clear hose method testing and watch for air bubbles in the water flow stream.

Rookie 07-18-2018 02:47 PM

Better vacuum/flow, moving more water. I'm assuming they are on the vacuum side of the sea pump. New impeller will keep it to the bottom of the output outlet. I don't see a problem.

payuppsucker 07-18-2018 02:54 PM


Originally Posted by Rookie (Post 4638567)
Better vacuum/flow, moving more water. I'm assuming they are on the vacuum side of the sea pump. New impeller will keep it to the bottom of the output outlet. I don't see a problem.

Mine swirl just above the screen at idle.

Sonichunter 07-18-2018 04:17 PM


Originally Posted by Rookie (Post 4638567)
Better vacuum/flow, moving more water. I'm assuming they are on the vacuum side of the sea pump. New impeller will keep it to the bottom of the output outlet. I don't see a problem.

I was hoping not. Everything seems perfectly fine. I replace impellers every year and they’ve never done this. Only thing different is the hoses in the transom assembly’s. I suspected an air leak, but both at the same time seemed unlikely. Thanks

Sonichunter 07-18-2018 04:18 PM


Originally Posted by payuppsucker (Post 4638570)
Mine swirl just above the screen at idle.


Mine do do the same, but used to fill up completely as soon as I’m on plane. Not so much anymore.

BUP 07-18-2018 04:21 PM

Smaller of anything for inlet water side ?? when changed all out over the winter ? What brand of parts did you install ? what impeller and housings did you use ?? Maybe your volume of water flow is lower than before ? Have no idea of the set up and parts used here.

BUP 07-18-2018 04:22 PM


Originally Posted by Sonichunter (Post 4638593)



Mine do do the same, but used to fill up completely as soon as I’m on plane. Not so much anymore.

sounds like less water flow volume to me

Sonichunter 07-18-2018 04:30 PM


Originally Posted by BUP (Post 4638594)
Smaller of anything for inlet water side ?? when changed all out over the winter ? What brand of parts did you install ? what impeller and housings did you use ?? Maybe your volume of water flow is lower than before ? Have no idea of the set up and parts used here.


no idea on parts. I don’t know how to rebuild assembly’s so I paid to have them done. Guy said my water lines were obsolete so he put the updated ones in. I used the same impellers and housing I use every year. Sorry I don’t have all the info. I was more looking to if it’s something to be overly concerned about or not. Like I stated, temps are all normal, just the strainers are different.

F-2 Speedy 07-18-2018 04:51 PM

Are you running circulation pumps ? was any thing done to the engine, exhaust while they were out. I agree with Rookie, if its staying cool and not leaking internally in the bilge run it


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