H2RTuner wrote:
Be careful, some timing lights have a feature called "dial-back", which has a dial to change the reading on the light. Only problem is, it is only for EFI digital systems, as they have a touch of computation lag in the computer, and the light has to take that into consideration on those systems.
If the dial back is used on a conventional NON-EFI system, the timing will read incorrectly. So, mark the timing pointer/scale, and leave the dial back feature OFF, if the light has it.
Thanks, I started with a digital type that has 2/4 stroke option and adjustable advance. It should read rpm but it jumps allover the scale. I then bought a more basic, non adjustable type, but was told by local guru not to waste time with the light as it most likely will not work, and could be in accurate.