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Ram-Pro Inline Spark Tester, Plug Engine Ignition 6-12 Volt Fool-Proof – Pick Up Coil/Armature Diagnostic Detector Tool for Automotive, Car, Lawnmower, Small & Big Internal/External Engines

  • Based on 6,623 reviews
Condition: New
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This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026

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Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, Dec 2
Order within 14 hours and 58 minutes
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Size: 1 Pack


Features

  • The Ram-Pro Engine Spark Tester Probe is a must have diagnostic tool for any engine with a spark plug, & can quickly and easily diagnose ignition/engine outboard motor issues or a fault in the fuel delivery system
  • HOW TO USE: Simply connect the tester between the spark plug and the plug wire, if spark is being sent, the tester will mirror the spark and light up - Find dirty spark plugs, defective points, bad cables or connections, etc.
  • DIMENSIONS: 6" boot/cable, 5" shaft/light housing; 2.2 oz. DESIGN: Nickel Plated Shaft, Double ended flexible tool offers a straight boot - Internal bulb lasts for years, but is replaceable through transparent housing
  • MUST HAVE: When engine won't start, gives instant answer to 'does it have spark?' - Saves time, frustration and money while also offering a safe secure way to identify spark
  • USE FOR: Essential Troubleshooting for All Internal & External Combustion Engines, cars, trucks, motorcycles, lawnmowers, chainsaws, trimmers, snow-blowers, generators etc. - A must have for any individual, professional mechanic garage and auto shop

Brand: RamPro


Power Source: Corded Electric


Style: Tool


Color: Black


Item Weight: 2.2 Ounces


Is Discontinued By Manufacturer ‏ : ‎ No


Package Dimensions ‏ : ‎ 7.64 x 4.17 x 1.1 inches; 2.2 ounces


Item model number ‏ : ‎ 2331


Department ‏ : ‎ Unisex Adult


Date First Available ‏ : ‎ July 1, 2016


Manufacturer ‏ : ‎ MIX N MORE INC


Best Sellers Rank: #4,327 in Automotive (See Top 100 in Automotive) #2 in Ignition Testers


#2 in Ignition Testers:


Customer Reviews: 4.5 4.5 out of 5 stars 6,623 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Dec 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • WOW!
Size: 1 Pack
Works like a champ Just need to put whatever you’re checking out of bright light. Easy to use. Great quality. It’s a keeper.
Reviewed in the United States on November 6, 2025 by a17mike

  • Essential Tool for Diagnosing Engine Ignition Issues
Size: 1 Pack
I recently used the Ram-Pro InLine Spark Tester to diagnose ignition problems in my car and lawnmower, and I’m very impressed with its performance. This 6-12 Volt spark tester is a reliable tool for both small and large engines, including automotive, lawnmowers, and other internal or external engines. The fool-proof design makes it easy to use, even for those who are not mechanically inclined. The tester quickly and accurately checks for spark by connecting directly to the spark plug or ignition coil. The clear and straightforward indicator helps in determining whether there’s a spark or if further investigation is needed. One of the standout features is its versatility; it works with a wide range of voltages and engine types. The pick-up coil/armature diagnostic detector tool has been very helpful in identifying ignition system issues and ensuring that my engines are firing correctly. The build quality is solid, and the tester feels durable and well-made. It’s a handy tool to have in your toolbox for troubleshooting ignition problems and performing regular maintenance. Overall, the Ram-Pro InLine Spark Tester is an excellent choice for anyone needing a reliable and easy-to-use spark tester. It provides accurate diagnostics and is a great value for its price. Highly recommended for both DIY mechanics and professional technicians! ... show more
Reviewed in the United States on August 23, 2024 by Morris G

  • Works but don't expect your mower to be running when doing the test with this tester just because it says in-line tester.
Size: 1 Pack
What I received was a carded brand called CAL-HAWK 6-12 Volt In-line ignition/spark tester. Made in China product. Looks like what is pictured on the Amazon site. Basically when you put it inline with your existing spark plug on say your lawn mower, it will not turn over your engine while you have this on, so don't expect your lawn mower to turn on running and that this would be some sort of glowing blinking, what it will do is that it will cause the light bulb in the unit glow when you pull on the pull cord each time. Its a somewhat weak glow but noticeable in the evening or in the dark. So you need to make sure you pull and tape down the mower break lever and pull your cord where you can also see the glow of the bulb, unless you have someone else pull the pull cord and you are standing close by watching this tester. ... show more
Reviewed in the United States on July 27, 2017 by Reversemidasman

  • Great item great price.
Size: 1 Pack
Works great. A must have in the toolbox.
Reviewed in the United States on October 1, 2025 by Brian W. Smith SR

  • Works great!
Size: 1 Pack
Work great!
Reviewed in the United States on November 6, 2025 by John L

  • Great item every engine home mechanic should have!
Size: 1 Pack
The media could not be loaded. This item helped me diagnose a rough running V-twin lawn tractor engine. I had already replaced the fuel system components and the spark plugs. I neighbor backyard mechanic suggested I check the spark plugs for spark by removing them and grounding them and examining the spark. That sounded undesirable to me, so I found this item. It is simple to use, just install it inline between the spark plug wire and the spark plug. It clearly showed me which cylinder was misfiring, and an easy coil change fixed the issue. It is a great item every engine home mechanic should have! The quality is very good and the price under $10 makes this a bargain. Highly recommended! ... show more
Reviewed in the United States on December 4, 2023 by Zig

  • Spark checker
Size: 1 Pack
Works as intended for home use only not professional quality
Reviewed in the United States on October 4, 2025 by Pakman

  • Limited Applications
Size: 1 Pack
This tool only works on spark plugs that have the" nipple" if the spark plug just has the threaded end like many small engine plugs, do, you cannot use it on that type. It seems to me a huge oversight.
Reviewed in the United States on September 10, 2025 by Paul Bourgeois

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