5.0L Merc Cooling system

[jetmart]

Is there a drawing of how the cooling water flows from the lower end, through the pump, engine, exhaust and back out?

I have a thru hull exhaust. I am use to outboards with a tattle tail indicating everything is fine.

 

[Bondo]

Re: 5.0L Merc Cooling system

Ayuh,... The 5.0l has been used by Merc for over 20 years,+ with several different cooling systems...
You need to provide More info about Your's...

 

[jetmart]

Re: 5.0L Merc Cooling system

1999 5.0L EFI with alpha 1 gen 11 ser# L347633

 

[Bondo]

Re: 5.0L Merc Cooling system

Ayuh,... Up in the Adults Only section of this forum are the Factory Manuals,...
Complete with Pictures,...

Have a Look...

 

[jetmart]

Re: 5.0L Merc Cooling system

Thanks found it in manual #24 page 6A-26. This shows all the water being discharged through the exhausts. Is this correct? I have through Hull exhaust and there just doesn't seem to be a lot of water flowing. Does anything exit out the lower end?

Engine temps are good and impeller and housing is 1 year and installed by professionals.

 

[Bondo]

Re: 5.0L Merc Cooling system

This shows all the water being discharged through the exhausts. Is this correct?

Ayuh,... That is Correct...

If in doubt, change the Impeller...