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Old 11-29-2010, 02:44 PM   #17 (permalink)
ConnClark
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Join Date: Jun 2008
Location: Richland,WA
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Das Schlepper Frog - '85 Mercedes Benz 300SD
90 day: 23.23 mpg (US)

Gentoo320 - '04 Mercedes C320 4Matic
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Quote:
Originally Posted by comptiger5000 View Post
Clark - The hair dryer should be used to pump hot air into the intake, as close to the manifold as possible. That will make it much easier to start the engine, even without waiting for it to all warm up first. It is similar to the intake heaters found on some diesels instead of, or in addition to, glow plugs.
Actually I did try that unsuccessfully.

Air temp isn't the problem. Its mainly fuel temp. Below a certain temp the fuel doesn't atomize or have the vapor pressure to emit vapors to ignite. Glow plugs add heat to the combustion chamber right next to the injectors. This heats the fuel some and adds heat to the combustion chamber walls so it doesn't sap heat away from the compressed air.
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