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 by GTC, General Technologies Corp

Product ID: 37155033

Details

Brand
GTC
Operating System
RTOS
Power Source
Handheld
Screen Size
3.5 inches
UPC
833303000688

⚡Measures spark peak voltage precisely

📊Real-time ignition waveform display

⏱️Detects ramp time & dwell angle accurately

SAR 1603

Duties & taxes included

In stock

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Description

⚙️ Ignite your diagnostics with precision and power!

TIMING PRECISION ⏱️ - Accurately measure ramp time and dwell angle to diagnose timing and coil faults effortlessly.
LIVE WAVEFORM ANALYSIS 📊 - Visualize ignition waveforms in real time for in-depth diagnostics and performance tuning.
PINPOINT IGNITION FAULTS ⚡ - Detect primary & secondary coil issues with exact spark peak voltage readings.
UNIVERSAL COMPATIBILITY 🌍 - Works seamlessly on all spark-ignition engines—from vintage 2-stroke magnetos to modern coil-on-plug systems.
INTERMITTENT ISSUE DETECTION 🔍 - Use chart & comparison functions to catch elusive misfires and performance glitches over time.

The GTC505 Engine Ignition Analyzer is a handheld, professional-grade tool designed for comprehensive spark ignition system diagnostics. It measures spark peak voltage, displays real-time ignition waveforms, and detects timing issues across all spark-ignition engines. Featuring advanced charting and comparison functions, it helps mechanics identify intermittent faults and optimize engine performance with unmatched accuracy.

Specifications

ASIN	B001TD5JYE
Best Sellers Rank	#264,936 in Automotive ( See Top 100 in Automotive ) #32 in Ignition Testers
Brand Name	GTC
Customer Reviews	4.4 4.4 out of 5 stars (343)
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	0.27 g
Manufacturer	GTC
Manufacturer Part Number	GTC505
Manufacturer Warranty Description	1-year parts and labor warranty, please see manual or manufacturer website for details, instructions, and exclusions.
Model Number	GTC505
Number of Items	1
Operating System	RTOS
Power Source	Handheld
Screen Size	3.5 inches
UPC	833303000688

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