This is the basic Gunson CO tester. The 12-volt connections power the unit while the pulse pump draws exhaust gas into the analyzer. The unit is designed to measure CO exhaust percentages. Those ...

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.

An engine relies on two things to run: spark and fuel. Sure, there are a million other things to consider when speaking of engine operation and power, but regardless of the type, size, or brand of ...