Jake Brake

Don't feel bad...I had to ask a mechanic friend. Evidently, it is a way for tractor trailer trucks to brake by backing down the engine. Or to use the engine to brake. You know the sound when you hear it (read loud).

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It restricts the exhaust..
Submitted by McDonoughDawg on Wed, 09/06/2006 - 1:05pm.

To basically not let the engine exhale (increasing backpressure), thus no propulsion. Free braking is why the truckers like it. It will not work on a gasoline engine. Yes, it is loud, and unmistakable in sound.

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:) thank you!
Submitted by ptcjenn on Tue, 09/05/2006 - 10:21pm.

I saw that sign a few times, and wasn't sure what it was. Glad to know I'm not unintentionally doing that.

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