Ford Lehman 120 heat exchanger

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jpar1972

Veteran Member
Joined
Aug 17, 2014
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37
Location
USA
I just finished switching my heat exchanger, how long should engine run before water comes out of exhaust. I turned engine on but no water is coming out of exhaust
 
It can take 30 sec. to a minute perhaps if the mufgler is dry and empty.

Feel the cover plate of your raw water pump with the engine running. If it's cool and doesn't warm up or get hot it's pumping water.
 
Last edited:
Could be an air lock. Loosen a hose and see if water is running


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