Uploaded October 2017 | Updated September 2026, 2 weeks ago
The original video in a word: oops. And this remake isn't really a whole lot better.
While this does work for its intended purpose, it's just a cheap multimeter with one special feature whose implementation isn't really all that great. It's likely to have trouble with ignition systems using a "waste spark" approach, those having more than one spark plug per cylinder and it won't work at all with coil-on-plug systems directly attached to the spark plugs. There are no settings for single, twin or even ten cylinder engines. (However, I'm not totally sure if this really matters, based on the instructions for taking a reading off of a single cylinder and scaling it up. I didn't check to see if the "number of cylinders" setting on the dial actually makes a difference. If I do, I'll update this accordingly.)
I don't think it's really worth the money or the possibility of being dinged a "restocking fee". This meter is nothing more than a rebadged All-Sun/E-Sun EM129. Heaven help you if you blow the internal fuses. They won't be any fun to get at.
In my defense, dead-on-arrival batteries really aren't something most people would expect. It's only ever happened to me twice, and the first one had the decency to be stone dead, despite being well within its "use by" date range.
In case you've got this meter and lost the instructions:
1. If the pickup is connected between the high voltage coil and distributor, multiply the displayed reading by ten to arrive at the correct RPM.
2. If the pickup is connected to a single spark plug wire, multiply the displayed reading by the number of cylinders and then by ten to arrive at the correct RPM.
The arrow on the probe should point toward a spark plug, or from coil to distributor.
The original video in a word: oops. And this remake isn't really a whole lot better.
While this does work for its intended purpose, it's just a cheap multimeter with one special feature whose implementation isn't really all that great. It's likely to have trouble with ignition systems using a "waste spark" approach, those having more than one spark plug per cylinder and it won't work at all with coil-on-plug systems directly attached to the spark plugs. There are no settings for single, twin or even ten cylinder engines. (However, I'm not totally sure if this really matters, based on the instructions for taking a reading off of a single cylinder and scaling it up. I didn't check to see if the "number of cylinders" setting on the dial actually makes a difference. If I do, I'll update this accordingly.)
I don't think it's really worth the money or the possibility of being dinged a "restocking fee". This meter is nothing more than a rebadged All-Sun/E-Sun EM129. Heaven help you if you blow the internal fuses. They won't be any fun to get at.
In my defense, dead-on-arrival batteries really aren't something most people would expect. It's only ever happened to me twice, and the first one had the decency to be stone dead, despite being well within its "use by" date range.
In case you've got this meter and lost the instructions:
1. If the pickup is connected between the high voltage coil and distributor, multiply the displayed reading by ten to arrive at the correct RPM.
2. If the pickup is connected to a single spark plug wire, multiply the displayed reading by the number of cylinders and then by ten to arrive at the correct RPM.
The arrow on the probe should point toward a spark plug, or from coil to distributor.
