Gasoline is volatile when vaporized with oxygen. As a motor fuel, gasoline burns best at a ratio of 14.7:1-roughly 14.7 pounds of air to each pound of gasoline. This optimal burn, known as ...

Tuning your engine with the aid of an air/fuel meter can really help you dial in your carburetor. But what numbers should you aim for? When people talk about the air/fuel ratio of their engine, do you ...

With our M715 sucking down fuel at a rate of 4 mpg, we knew we had to do some-thing. We were running a Holley 670cfm Truck Avenger on our Chevy V-8, and thanks to an AEM wide-band O2 sensor, we knew ...

For nearly 100 years, a carburetor has been at the heart of almost all internal combustion engines. Only in the last 20 years or so have car makers used electronic fuel injection exclusively on ...

A lambda probe (or oxygen sensor) can be found on the exhaust system of most cars running on unleaded fuel. Having reached its normal operating temperature (of about 600 degrees Celsius!) the lambda ...