Losing anti freeze , overheating

paparuxpaparux Member Posts: 4 ✭
in Generator Discussions
2004 342 fiesta vee. I’m constantly adding antifreeze. I don’t see any visible signs of leaking. An hour trip I lose about a quart. Longer runs cause overheating. I don’t smell it burning or any smell at all. All help greatly appreciated.
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  • aero3113aero3113 Member Posts: 9,091 ✭✭✭✭✭
    edited July 2022
    It’s mostly likely your heat exchanger and it’s leaking, antifreeze is going overboard with the raw water. A head gasket could be the culprit also but you would probably smell it then.
    2008 330EC
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  • PickleRickPickleRick Member Posts: 4,068 ✭✭✭✭✭
    Many local auto parts stores will rent you a pressure test kit for a radiator.  Pressurize it to the psi on the cap and wait.  I think it's 13 or 15 psi. 
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  • Liberty44140Liberty44140 Member Posts: 4,396 ✭✭✭✭✭
    Good point Rick. I've done this before from Auto Zone, was free for 48 hrs and had multiple caps to find the right fit. 
    07' Cruisers 390 (Previous Rinker's: 06' 342EC & 01' 310FV)

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  • paparuxpaparux Member Posts: 4 ✭
    @aero3113, I believe your correct, what is the best way to test for that? I don’t smell it burn and nothing shows up in oil or bilge pump area. Is there away to check the heat exchanger?
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  • aero3113aero3113 Member Posts: 9,091 ✭✭✭✭✭
    edited July 2022
    Yes, you can pressure check them but would have to be done off the engine. You can check the head gasket with a simple compression check (but sounds like it’s you heat exchanger).
    2008 330EC
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