Re: Too Cold Carburator

Posted by Bob M on September 16, 2004 at 12:02:23 from (165.170.128.66):

In Reply to: Too Cold Carburator posted by Jerry in MI on September 16, 2004 at 11:26:48:

Jerry - By it’s very nature the air passing thru a carburetor becomes colder. Under certain conditions of temperature/humidity condensation or frost will form on both the exterior and interior carb surfaces. This is normal. However when frost builds up in the venturi area it causes runability problems as you have found.

Over many years of pushing snow here’s things I’ve found that help:

Make sure your thermostat is working. Use the highest temp t’stat you can find - 180 deg is good.

Use a winter front to cover the radiator in cool weather. The causes a slow flow of warm air to pass back over and warm carburetor instead of the hard, cold blast from an uncovered radiator. Don’t have a winter front? Simply flatten a feed bag and use it to cover 80% - 90% of the radiator opening!

When starting up open the choke as quickly as possible. (Running with the choke partially closed encourages icing.)

Minimize engine idle time. Either load the engine or shut it off!

Add a bottle or two of drygas each time you refill the gas tank.

In extreme cases (light load, high humidity and temperature between 35 and 50 deg), running a hose from to pick up hot air from around the exhaust manifold and feed it to the air cleaner will eliminate icing.

Good luck - I have a feeling we're gonna have a lotta snow to push again this winter!

Follow Ups:

• Re: Too Cold Carburator Ted D 12:38:42 09/16/04 (1)
  • Re: Too Cold Carburator Bob M 12:49:00 09/16/04 (0)

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