You can also investigate max advance which usually goes off-scale with the old 5-10 degree marks.įrom using the Snap-On I am now spoiled. You can even make your own in some convenient spot. With the timing adjustable on the timing light all you need is the one mark. Gone are the 5-10 degrees of tick marks on a timing cover. The handy thing about being able to increment the advance or retard is that many newer cars have only a single timing mark. No need to hook up another instrument and balance it somewhere under the hood. Having the tach right on the light is actually pretty damn handy because you can basically see the timing mark AND the RPM simultaneously. Nothing more annoying than a timing light that is too dim. I only mentioned it because I liked its set of features and it was the only one I ever used with that set. I am not saying you have to get a Snap-On brand timing light (though you may get a good deal on a used one). I've had timing lights that weren't very bright and I'd like to avoid that in the next one I buy. Very bright and flashes when a jolt of electricity goes to the spark plug seems like it would fit the bill. 05% sounds like it is much more accurate than the timing light's +/-2%. ![]() If I want to check RPM I'll use my optical tacho which at a claimed. I'm having difficulty seeing why the timing light needs to be adjustable as that sounds like something else waiting to go wrong. ![]() I want to see if the ignition is advancing/retarding based on the timing marks on the alternator rotor on the end of the crankshaft. Even one that plugged into 110v house current would be fine as that would save hooking the timing light up to the car's battery for the dirt bikes/roadracers that don't use a battery. ![]() I have no problems hooking the light up to a 12v battery to power it (which is what I had to do with my old one) since it would probably be used infrequently enough that any on-board battery would usually be dead from sitting unused. It needs an inductive pickup that I can hook on to the spark lead that doesn't care if it is my Bultaco two-stroke with a points magneto, a Honda 90 with a 6v DC points system, or my B50 BSA with a 12v Lucas Rita electronic ignition. I suppose it might help if I mention that I want something to use to check a motorcycle ignition to make sure it isn't too advanced at full advance and make sure I can see timing moving from the static setting to full advance. What's with all that other stuff on the Snap-On timing light? All I've ever used or seen is an externally-powered inductive-pickup light that lets me check timing marks.
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