I have a Snap-on Timing Light Model MT 2261. The owners manual that I found on the internet states when I turn it on and have it properly hooked up it would ask me to enter the number of cylinders. This question never comes but the light works properly both rpm and timing for a 8 cylinder engine. My question is for those that have this model timing light does the number of cylinder question show up?
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Snap-on Timing Light
- Thread starter 66vette
- Start date
DynoDale
Well-known member
Your "internet" manual is incorrect.
Try this one:
https://www.scribd.com/doc/248836815/Snap-On-MT2261A-User-Manual
Try this one:
https://www.scribd.com/doc/248836815/Snap-On-MT2261A-User-Manual
Thanks for the correct manual.
How does it correctly select the number of cylinders for accurate RPM readings?
DynoDale
Well-known member
It would only need to know the number of cylinders if you used the pickup on the coil wire. You're not supposed to do that... Since you only watch one of the cylinders fire, and it fires every other revolution of the engine, the time between firing events is used to compute the engine speed.