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| Author |
Message |
    
Steve Nelson
New member
Username: truthbtold
Post Number: 1
Registered: 10-2009
| | Posted on Tuesday, October 13, 2009 - 06:41 pm: | 
|
OK, so I totally rebuild my mid-80's 470 merc, blue-printed top to bottom. Finally get it all back together, she fires up and sounds fantastic. I notice however that the coolant in the reservoir is now water and that while idling for an hour, have pumped all the coolant out the exhaust. I check the connections on the new 4" heat exchanger and all is hooked up properly, and heat exchanger is not bad. I can't figure out how the fresh water got into the closed coolant loop!
Any suggestions? Exhaust manifold issues? |
Guy Gaspar
Senior Member
Username: guyjg
Post Number: 5406
Registered: 08-2006
| | Posted on Tuesday, October 13, 2009 - 07:23 pm: |
|
Are you absolutely sure the hoses are not hooked up bass akwards? Pressure test the coolant reservior and watch for coolant in the water line. |
Steve Nelson
New member
Username: truthbtold
Post Number: 2
Registered: 10-2009
| | Posted on Wednesday, October 14, 2009 - 09:58 am: |
|
Yep
Hoses are correct. That was my 1st guess. Which water line? I'm wondering if It's the exhaust mainfold |
Kghost
Senior Member
Username: kghost
Post Number: 1018
Registered: 07-2008
| | Posted on Wednesday, October 14, 2009 - 10:18 am: |
|
The gasket may be orentied incorrectly see pic or the BLOCK OFF plate at the elbow is missing in other pic???
Depends on what set up you have.
 |
Steve Nelson
New member
Username: truthbtold
Post Number: 3
Registered: 10-2009
| | Posted on Wednesday, October 14, 2009 - 03:54 pm: |
|
Thanks for the info. I think this must be the issue
steve |
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