Is this top of line ?

It's, as far as I know, a unique product. No-one else makes anything quite like it (as a handheld, one-box solution). I've got one, and it's a fantastic time-saver. I can do a quick look at four cylinder's worth of ignition waveforms in twenty seconds. To do the same thing with my Snap-On Verus (five grand's worth) takes five minutes to boot, then a couple of minutes to find and plug up the adaptor, then another minute to configure the scope mode. And I gain little or nothing more by doing it with the Snap-On tool than using the GTC product.

Will this work on a single cylinder lawnmower engine to read rpm? If so what setting would you use?

The problem is that when the unit is in tach mode it reads the wrong RPM’s because you you can not set it for the number of cylinders that your engine has. It’s permanently set for “8” cylinders with no way to change it to “1”, “2”, “4”, or “6” cylinders so that the tach function will read correctly. You have the option of setting the unit for a 2-cycle or a 4-cycle engine so why can you not set the number of cylinders?

Does this product have a warranty besides the 4yr protection plan?

Yes, the GTC505 comes with General Technologies Corp's standard product warranty, which lasts 1 year (from date of purchase). Please visit the GTC warranty page for details https://gtc.ca/warranty.html If you have problems after the warranty period, please contact the manufacturer, as GTC can often provide replacement parts, or repairs.

Can this be used to set ignition timing instead of a timing gun?

Nope. There is no strobe to illuminate the timing marks on the vibration damper.

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GTC505 Engine Ignition Analyzer - Spark Diagnostics and Tachometer Readings for Marine, Motorcycle, and Automotive Mechanics, General Technologies Corp

Product ID: 275705962

Details

Brand
GTC
Power source
Battery
Automotive Fit Type
Universal Fit
UPC
833303000688
Global Trade Identification Number

⚡Measures spark peak voltage

📈Real-time ignition waveform display

⏱️Detects ramp time/dwell angle

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144172 som

Duties & taxes included

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Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Ignite your diagnostics with precision and speed!

TIMING ISSUE DETECTION - Accurately diagnose ramp time and dwell angle anomalies ⏱️ to optimize engine timing.
INTERMITTENT FAULT FINDER - Chart & compare hundreds of spark events to catch elusive misfires and performance dips.
PRECISION SPARK DIAGNOSTICS - Pinpoint primary & secondary coil faults with ⚡ peak voltage measurement.
UNIVERSAL ENGINE COMPATIBILITY - Works seamlessly on everything from 2-stroke magnetos to modern coil-on-plug systems.
LIVE IGNITION WAVEFORM ANALYSIS - Visualize real-time ignition patterns for instant, data-driven troubleshooting 📈.

The GTC505 Engine Ignition Analyzer is a versatile handheld tool designed for professional mechanics to diagnose and optimize spark ignition systems across all engine types. It offers real-time waveform visualization, spark peak voltage measurement, and timing diagnostics, enhanced by advanced charting to detect intermittent faults, making it indispensable for marine, motorcycle, and automotive applications.

Specifications

ASIN	B001TD5JYE
Automotive Fit Type	Universal Fit
Best Sellers Rank	#65,939 in Automotive ( See Top 100 in Automotive ) #1,528 in Automotive Diagnostic, Test & Measuring Tools
Brand	GTC
Brand Name	GTC
Customer Reviews	4.4 out of 5 stars 318 Reviews
Global Trade Identification Number	00833303000688
Included Components	GTC505, flexible probe, coil on plug pickup, spark plug wire pickup, USB micro cable, AC adapter, user manual
Item Type Name	GTC505 Engine Ignition Analyzer
Item Weight	907 g
Manufacturer	GTC
Power Source	Battery Powered
Power source	Battery Powered
UPC	833303000688

Reviews

J**Z

Muy buen articulo

23.05.2025

F**D

Great tool! Works very well great for quick detection of misfires easy to use!

19.05.2025

A**R

Good

1.01.2019

A**R

Brilliant tool

23.07.2021

R**U

使い勝手良い

満足

22.01.2026

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144172 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Kyrgyzstan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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