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Smith Tow Behind Air Compressor Will Not Idle, Runs Flat Out?

Published Categorized as Air Compressor Troubleshooting, Smith 3 Comments on Smith Tow Behind Air Compressor Will Not Idle, Runs Flat Out?

I have a just bought a smith 100D 100 cfm 125psi 302 ford, tow behind compressor .
As soon as it starts it runs wide open and when I close the main air valve that goes to the hose the motor dies. Does it ever go to IDLE ? Is this normal ?? Thanks, Loren, Dickens Iowa.

Smith 100D air compressor similar to Loren's
Smith 100D air compressor similar to Loren’s

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Might be pressure sensor
by: Doug in s.d.ca

No, this is not normal. Could be pressure sensor or engine control stuck/jammed.

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Leak in after cooler
by: Loren

I found a leak in the after cooler will this cause the unit not to idle down? And if so is it a big job to fix it? Thank You, Loren

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Let it warm up first!
by: Anonymous

Let it run for a minute with valve open. Lets the engine warm up and it will not die out.


I am having a lot of trouble finding parts for my Smith 100gp tow behind compressor…specifically a carburetor. Any idea where to get this? I can’t find anyone that knows anything about these compressors, asks Shelley.

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Shelly – its a Ford 302. I’m attaching a manual. Doug from s.d.ca.

https://www.about-air-compressors.com/wp-content/uploads/2020/12/Smith-compressor-manual-1608254745.0308.pdf


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By Bill Wade

About Air Compressors has been helping folks with their Air Compressor Problems since 2002 online. We're a community of DIY and Compressed Air professionals who are keen to support everyone across the globe with their air compressor issues and troubleshooting. Whether you're trying to identify an old air compressor, or troubleshoot an error code on a sophisticated new industrial air compressor - the community at About-Air-Compressors.com is here to help you

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