How do you check spark plugs spark on motor vehicle?

Answer 1

Checking for spark with CheckSpark is easy simply clip it on the wire and turn the engine over, Then check the lights, Green light means spark plug and wire are good, yellow light indicates a bad plug or wire, Red means no spark at all, and flashing red indicates low spark, plug short or flooded condition. CheckSpark actually evaluates the spark. So move from wire to wire read the lights and you could be done in less time than it took to read this. It's safe, simple and fast. You can get them on e-bay. Works on all engines with plugs and wires, new or old big or small.