Customer Reviews

Electronic Specialties 325 EZ-Tach Digital Automotive Tachometer

5 star:		(1)
4 star:		(2)
3 star:		(2)
2 star:		(1)
1 star:		(2)

 

 

I used this to provide RPM data while rejetting and fine tuning the carburetors on my motorcycle. It worked well and seems to have a decent build quality. Make sure to clamp the tool on the plug wire in the right direction, know if you are testing a two or four stroke engine, and know something about how many spark pulses are sent per engine cycle.

I bought this unit to adjust the idle/maximum RPM on various outdoor power equipment with small engines. When I connected it up to a snow blower, the readings were very erratic. I decided to try the unit on my car. It worked fine in that application, displaying the same value as the tachometer on the dash.

On the package, there's a sticker saying Automotive Use Only and that Model 321 should be used for small engines. I wish that information was prominently displayed in the online description. The description says 'any automotive engine with a spark plug wire' which I interpreted as any 4 cycle gasoline powered engine.

BTW, the model 321 is 3 times the price.

This tach works pretty good, only drawback is it is directional. Sometimes that puts the display on the back side and makes it hard to read. But overall, a nice tool.

Works as advertised and performed its function just like I had hoped it would. I needed to verify the RPMs on my V Twin motorcycle.

this tach does not work well at all. while you can hear that the engine is running at a steady speed, the tach reading will vary by as much as 400 RPM or more. with an engine running at a reasonably steady 1000 RPM at idle, the tach will read from 800 to 1200 to even 1300 or 1400 at times. worthless as a engine tuner's tach. if I had not already disposed of the packaging, I would have returned the device and gotten my money back.

do NOT buy this tach for engine tuning. totally unreliable.

From the description on the website, as well as one of the reviews, I thought this would work on a motorcycle (scooter, actually, with a 4 cycle engine). It doesn't. The packaging on the unit describes it as for automobile engines only. After getting it, I went to the company's website. It too said autos only, and recommended a different product for smaller engines, like motorcycles. This may work fine for autos -- I don't know. But for my scooter, it didn't work at all. I'm a bit mystified how the one user got such good results on his motorcycle engine. My advice - unless you want this for an automobile engine, this probably isn't the right product for you.

To my surprise, when it came time to use the product didn't work.
Having waited to long to use it the return warranty had expired. So no return for me.

The jaws of this inductive measuring device are a little to wide to use on a pushmowers plug wire. The plug wires are not long enough for the jaws of the unit to fit around. The mower metal casing gets in the way.