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 ...

Owners of 2007-09 Honda CR-V models may come into your store with the Check Engine light illuminated and one or more of the following trouble codes stored in PCM memory: P0134, P0135, P0171 and P1157.

Electronic fuel injection is better for its efficiency, but installing it in a car that wasn't built for it requires ...

High bandwidth control of the air-fuel ratio is necessary in order to minimize the exhaust emissions of sparkignition engines with three-way catalytic converters. A new approach is to implement a ...

For any engine to reach its maximum potential, the fuel must burn efficiently. Running rich or lean is not good for performance, and in extreme cases it can be catastrophic. A rich engine is likely to ...

Usually you'll only modify your engine's computer to achieve higher engine output, but with recent gas prices it's worth looking at your ECU to see what kind of gains in economy you can get. Since the ...

The diagram indicates that the fuel consumption of an IC engine at constant RPM is dependent on the Air/Fuel ratio and the Ignition Timing. The graph shows that advancing the spark for this engine by ...

Mazda’s new SkyActiv-X engine will go against every convention you thought you understood about gasoline engines. It’s supercharged, but for efficiency purposes, not to increase power. It has a ...

It's a common misconception that modern fuel-injected engines are more immune to flooding than older carbureted motors. Given the right (or wrong) conditions, any internal combustion engine –- whether ...