Very useful Diagnostic tool, good to help trace difficult intermittent faults.

Es cómodo para no tener que sacar la bujía

Je l'utilise souvent pour contrôler l'allumage motoculture sans démontage de la bougie très satisfait.

Siu monta "in serie" al cavo candela e permette di vedere se arriva regolarmente la scintilla, ottimo nel mio caso per la manutenzione del mio gruppo elettrogeno honda eu20i

This product arrived on time and did everything I expected it to do. It was also a great price. I hooked it up and within 5 minutes I had the problem diagnosed.