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.

Gtc505 Engine Ignition Analyzer Spark Diagnostics And Tachometer Readings Marine

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Description

⚡ Ignite your engine insights — don’t get left in the dark!

COMPACT USER FRIENDLY - Handheld design with intuitive interface—engine diagnostics made effortless.
PRECISION SPARK DIAGNOSTICS - Pinpoint primary & secondary coil faults with unmatched accuracy.
REAL TIME WAVEFORM ANALYSIS - Visualize ignition patterns instantly for faster troubleshooting.
INTERMITTENT ISSUE DETECTION - Chart & compare hundreds of spark events to catch elusive misfires.
UNIVERSAL ENGINE COMPATIBILITY - From vintage 2-strokes to modern coil-on-plug systems, one tool fits all.

The GTC505 Engine Ignition Analyzer is a professional-grade handheld device designed to diagnose and measure all spark ignition systems. It delivers real-time secondary ignition waveforms, primary coil ramp time, dwell time, spark burn time, and RPM data. Featuring advanced charting and comparison tools, it excels at detecting intermittent faults and misfires across all spark-ignition engines, from small magneto 2-strokes to modern computer-controlled coil-on-plug setups. Trusted by ASE-certified mechanics and engineers alike, the GTC505 combines precision, versatility, and ease of use in a rugged 2-pound package.

Specifications

ASIN	B001TD5JYE
Best Sellers Rank	#144,019 in Automotive ( See Top 100 in Automotive ) #20 in Ignition Testers
Brand	GTC
Brand Name	GTC
Customer Reviews	4.5 out of 5 stars 336 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	2 Pounds
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

Reviews

F**D

19.05.2025

W**R

28.10.2025

M**C

15.07.2025

S**R

7.11.2025

T**H

31.01.2020

Т**V

9.01.2025

O**L

13.07.2021

D**N

2.09.2024

J**Z

23.05.2025

A**R

1.01.2019

A**R

23.07.2021

R**U

22.01.2026

C**D

24.05.2025

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Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

₨9008

Duties & taxes included

In stock

Sold byAmazon SeychellesDelivered 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 Seychelles.

Secure transaction

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

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Description

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Common Questions