--- product_id: 37155033 title: "GTC505 Engine Ignition Analyzer - Spark Diagnostics and Tachometer Readings for Marine, Motorcycle, and Automotive Mechanics by GTC, General Technologies Corp" brand: "gtc" price: "NT$17806" currency: TWD in_stock: true reviews_count: 13 category: "Gtc" url: https://www.desertcart.tw/products/37155033-gtc505-engine-ignition-analyzer-spark-diagnostics-and-tachometer-readings-marine store_origin: TW region: Taiwan --- # Measures peak spark voltage Real-time ignition waveform display Detects ramp time & dwell angle GTC505 Engine Ignition Analyzer - Spark Diagnostics and Tachometer Readings for Marine, Motorcycle, and Automotive Mechanics by GTC, General Technologies Corp **Brand:** gtc **Price:** NT$17806 **Availability:** ✅ In Stock ## Summary > ⚡ Ignite your engine insights — don’t get left in the dark! ## Quick Answers - **What is this?** GTC505 Engine Ignition Analyzer - Spark Diagnostics and Tachometer Readings for Marine, Motorcycle, and Automotive Mechanics by GTC, General Technologies Corp by gtc - **How much does it cost?** NT$17806 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/37155033-gtc505-engine-ignition-analyzer-spark-diagnostics-and-tachometer-readings-marine) ## Best For - gtc enthusiasts ## Why This Product - Trusted gtc brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **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. ## Overview 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. ## Description The GTC505 Engine Ignition Analyzer is a handheld instrument designed from the ground up for the diagnosis and performance measurement of all types of spark ignition systems, from conventional to the newest Coil on Plug in use. The GTC505 is capable of displaying and measuring the following in real time: secondary ignition waveform, primary coil current ramp time, dwell time, spark burn time and RPM. It also provides two innovative and unique display formats used to compare measurements between cylinders, and to look at data for hundreds of spark events over time in order to detect intermittent problems, misfires and other performance issues which are very difficult to detect using conventional scopes. Review: Great tool! Works very well great for quick detection of misfires easy to use! - I had this tool now for a while I'm impressed with it it works very well. It's great for a quick run and gun misfire chase down it's well worth the money. A great product from Canada! I'm sure this is a US seller support the US in Canada! The build quality is great the functionality is awesome! I think the price could be a little better but it's worth the money! Review: Well designed and built, but problematic choice of probe connector - Pros: This tool is very well designed with a robust case and solid plastic buttons that have a quality feel when pressed. The software is innovative and provides useful modes and views as described in GTC materials. It is great to have a tool that features probes for BOTH spark plug wires and coil on plug (COP) systems. When using "tachometer" mode, the RPMs are fairly stable both in chart and digital view. This is a really big plus. Cons: In chart view, the highly variable secondary spark voltage jumps around and you have to visually ascertain an average value. You can estimate an average kV by comparing real-time kV readings to the y-axis label values. It would be best if in digital view, the average kV was shown in addition to min and max. Not a serious problem though. Spark plug kV will jump around a lot because of real-time changes in resistance at the plug, timing changes, etc. On the tool I received, the BNC female connector for the gooseneck probe on top of the unit fits somewhat loosely and its weight can make it rock back and forth a bit. In my opinion this can eventually loosen the inner conductor sleeve of the female BNC and maybe lead to intermittent connections. BNC connectors can have this problem, for example when matching 75 ohm connectors to 50 ohm connectors. Fortunately conventional coax cables with BNC male connectors are lighter in weight than the gooseneck probe and they do seem to fit more snuggly. You can get a 3 to 6 ft flexible coax cable with male and female BNC connectors and fix the probe to the end of the cable to use as a test wand. Alternatively, GTC makes a 2 meter flexible coax cable that accepts all the probe tips, and gets around the problem of a loose fitting gooseneck probe. It also has a locking spark plug wire probe. The part number is GTC505-CSC and you can order it directly from GTC for a reasonable price. If your gooseneck probe fits loosely to the BNC connector on top, I would definitely get a coax extension cable or the GTC505-CSC. desertcart should stock this accessory. Otherwise it appears to be a very fine tool and worth the cost. ## Features - Measures spark peak voltage, for finding primary and secondary coil faults - Displays ignition waveforms in real time, allowing for detailed analysis - Detects ramp time (or dwell angle), for diagnosis of timing issues and primary coil faults - Has chart and comparison functions, allowing the user to find intermittent issues - Works on all spark-ignition engines, from small 2-stroke engines with magnetos to modern cars with computer-controlled coil on plug systems ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001TD5JYE | | Best Sellers Rank | #335,511 in Automotive ( See Top 100 in Automotive ) #38 in Ignition Testers | | Brand | GTC | | Brand Name | GTC | | Customer Reviews | 4.4 out of 5 stars 338 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 | ## Product Details - **Brand:** GTC - **Operating System:** RTOS - **Power Source:** Handheld - **Screen Size:** 3.5 Inches - **UPC:** 833303000688 ## Images ![GTC505 Engine Ignition Analyzer - Spark Diagnostics and Tachometer Readings for Marine, Motorcycle, and Automotive Mechanics by GTC, General Technologies Corp - Image 1](https://m.media-amazon.com/images/I/612AX+MwL5L.jpg) ![GTC505 Engine Ignition Analyzer - Spark Diagnostics and Tachometer Readings for Marine, Motorcycle, and Automotive Mechanics by GTC, General Technologies Corp - Image 2](https://m.media-amazon.com/images/I/71MUHnFaz2L.jpg) ![GTC505 Engine Ignition Analyzer - Spark Diagnostics and Tachometer Readings for Marine, Motorcycle, and Automotive Mechanics by GTC, General Technologies Corp - Image 3](https://m.media-amazon.com/images/I/81D5GFO8ChL.jpg) ![GTC505 Engine Ignition Analyzer - Spark Diagnostics and Tachometer Readings for Marine, Motorcycle, and Automotive Mechanics by GTC, General Technologies Corp - Image 4](https://m.media-amazon.com/images/I/71BhylSGZoL.jpg) ![GTC505 Engine Ignition Analyzer - Spark Diagnostics and Tachometer Readings for Marine, Motorcycle, and Automotive Mechanics by GTC, General Technologies Corp - Image 5](https://m.media-amazon.com/images/I/71lk8y-x-LL.jpg) ## Questions & Answers **Q: Is this top of line ?** A: 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. **Q: Will this work on a single cylinder lawnmower engine to read rpm? If so what setting would you use?** A: 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? **Q: Does this product have a warranty besides the 4yr protection plan?** A: 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. **Q: Can this be used to set ignition timing instead of a timing gun?** A: Nope. There is no strobe to illuminate the timing marks on the vibration damper. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great tool! Works very well great for quick detection of misfires easy to use! *by F***D on May 19, 2025* I had this tool now for a while I'm impressed with it it works very well. It's great for a quick run and gun misfire chase down it's well worth the money. A great product from Canada! I'm sure this is a US seller support the US in Canada! The build quality is great the functionality is awesome! I think the price could be a little better but it's worth the money! ### ⭐⭐⭐⭐⭐ Well designed and built, but problematic choice of probe connector *by T***H on January 31, 2020* Pros: This tool is very well designed with a robust case and solid plastic buttons that have a quality feel when pressed. The software is innovative and provides useful modes and views as described in GTC materials. It is great to have a tool that features probes for BOTH spark plug wires and coil on plug (COP) systems. When using "tachometer" mode, the RPMs are fairly stable both in chart and digital view. This is a really big plus. Cons: In chart view, the highly variable secondary spark voltage jumps around and you have to visually ascertain an average value. You can estimate an average kV by comparing real-time kV readings to the y-axis label values. It would be best if in digital view, the average kV was shown in addition to min and max. Not a serious problem though. Spark plug kV will jump around a lot because of real-time changes in resistance at the plug, timing changes, etc. On the tool I received, the BNC female connector for the gooseneck probe on top of the unit fits somewhat loosely and its weight can make it rock back and forth a bit. In my opinion this can eventually loosen the inner conductor sleeve of the female BNC and maybe lead to intermittent connections. BNC connectors can have this problem, for example when matching 75 ohm connectors to 50 ohm connectors. Fortunately conventional coax cables with BNC male connectors are lighter in weight than the gooseneck probe and they do seem to fit more snuggly. You can get a 3 to 6 ft flexible coax cable with male and female BNC connectors and fix the probe to the end of the cable to use as a test wand. Alternatively, GTC makes a 2 meter flexible coax cable that accepts all the probe tips, and gets around the problem of a loose fitting gooseneck probe. It also has a locking spark plug wire probe. The part number is GTC505-CSC and you can order it directly from GTC for a reasonable price. If your gooseneck probe fits loosely to the BNC connector on top, I would definitely get a coax extension cable or the GTC505-CSC. Amazon should stock this accessory. Otherwise it appears to be a very fine tool and worth the cost. ### ⭐⭐⭐⭐⭐ A SPECTACULAR Tool *by W***R on October 28, 2025* This is a SPECTACULAR tool. I have a oscilloscope I have used for ignition analysis for years and this little box does EVERYTHING I need and more. It beats out a very high end storage scope and gives clear, easy to understand info. I have been using my for over a year and could not be happier. This review is coming from an ASE Certified mechanic, motorcycle repair shop owner, retired 40 year career Electrical Engineer. PS - My first one, an early version, had a software problem. They took it back, found it, fixed it, and sent me a new fixed unit at no charge. How a company solves a problem is the true test of their customer service and technical expertise. These guys are GREAT. ## Frequently Bought Together - GTC GTC505 Engine Ignition Analyzer - Spark Diagnostics and Tachometer Readings for Marine, Motorcycle, and Automotive Mechanics, General Technologies Corp - OTC 5609 Cylinder Leakage Tester Kit , Black - OTC 5613 Vacuum/Pressure Gauge Kit --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tw/products/37155033-gtc505-engine-ignition-analyzer-spark-diagnostics-and-tachometer-readings-marine](https://www.desertcart.tw/products/37155033-gtc505-engine-ignition-analyzer-spark-diagnostics-and-tachometer-readings-marine) --- *Product available on Desertcart Taiwan* *Store origin: TW* *Last updated: 2026-05-22*