Re: 434 international carb freezes

Posted by Bob on December 18, 2004 at 18:13:49 from (66.163.134.177):

In Reply to: 434 international carb freezes posted by R baker on December 18, 2004 at 17:42:37:

The frost is caused by the intake air expanding after passing through the venturi in the carburetor. This chills the air, and freezes any moisture contained in it.

The external frost on the carb is harmless, it's frost INSIDE the venturi and main jet area that causes problems.

Enclosing the engine with a "Heat-Houser" type setup to keep it warm will help. Be sure the thermostat is working, so the engine warms up. Cover as much of the radiator as you can without it overheating. Add some "HEET" or a comparable product to the gasoline. In extreme cases, the intake to the air cleaner may need to be re-routed to a warmer place (beneath the "Heat Houser" or next to the exhaust manifold. Think "manifold preheat", as on an airplane.

Follow Ups:

• Re: 434 international carb freezes R baker 18:20:10 12/18/04 (0)

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