Leaning the fuel/air mixture in an aircraft engine improves fuel efficiency by optimizing the fuel-to-air ratio for best economy. The process involves gradually reducing the mixture until the engine ...

Tuning a carburetor to supply an engine with the correct jetting-air/fuel mixture has always been a job that almost impossible for most hot rod owners and tuners. In the past, most performance engine ...

Carb tuning has always been nothing short of black art, truly mastered by few. Calibrating the carb to provide an optimal air/fuel ratio over the engine's operating range enhances the power output.

According to tuners that we’ve spoken to, even engines with fairly big cams will idle at 13.0:1 air/fuel ratio and might be able to handle as lean as 14:1 air/fuel ratio at part-throttle. Much of this ...

A misfire means that a cylinder in your engine isn’t producing the power it should because the air-fuel mixture in it didn’t properly ignite and burn. It could be an intermittent problem — meaning it ...

Jetting a carburetor is one of the few "black arts" in the automotive world that is still a mystery to most racers and tuners. Most tuners still look at the spark plug, the exhaust port, and the first ...

Your car’s engine is an amazing feat of engineering, but it doesn’t take much to cause problems with the way it runs. Too much air, too little fuel, a field mouse making the engine bay it home, and ...

Cars and motorcycles both emerged in late-19th century Germany. Karl Benz designed and built the Patent Motorwagen around 1885, which was when Gottlieb Daimler and William Maybach created the first ...