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Description
DUOYI Automobile Dual-hole Spark Plug Diagnostic Tester, DUOYI EU Plug1. Power adapter: Input 100 240V AC Output 12V 1A DC 2. Purpose: test spark plug performance and ignition strength 3. Application range: 12V gasoline engine automotive spark plugs 4. The dual hole automotive spark plug tester has two test holes, which can test two spark plugs at the same time. If you suspect that any spark plug is not working properly, you can do a comparative test to make an accurate judgment 5. Test principle: In the automotive
1. Power adapter: Input 100-240V AC / Output 12V 1A DC
2. Purpose: test spark plug performance and ignition strength
3. Application range: 12V gasoline engine automotive spark plugs
4. The dual-hole automotive spark plug tester has two test holes, which can test two spark plugs at the same time. If you suspect that any spark plug is not working properly, you can do a comparative test to make an accurate judgment
5. Test principle: In the automotive ignition system, the high-voltage ignition coil generates a high voltage (more than 10,000 volts), and the spark plug leads it to form a high-voltage ignition coil into the cylinder engine. The spark between the spark plug electrodes ignites the mixture. The detector can distinguish good spark plugs from bad spark plugs according to the intensity of the spark
6. Turn the key switch clockwise to turn on the tester, and the indicator light is green
7. Close the protective cover, insert the adapter into the side socket, and connect the tester to the power supply to turn it on
8. Turn the switch clockwise to adjust the operating frequency between 1000rpm and 6000rpm/min. The higher the frequency setting, the stronger the spark.
9. Dimensions: 145x85x60mm
10. Weight: 354g
Instructions for use of the automotive spark plug tester:
1. Turn off the power before placing the spark plug
2. The spark plug tester is a high-voltage detector. Do not touch the spark plug with your hands during operation to avoid danger
Packing list:
- Spark plug tester x 1
- Power adapter x 1
- User manual (English) x 1
Specification:
| Package Weight |
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 5
it looks fantastic. There is nothing humble about this watch
Color: A Gold
It is a steal for the money, it looks fantastic. There is nothing humble about this watch. It makes its presence known. I see people get sight of it, then look away and come back and take a second long look at it One thing I would change.. the hands are not easily seen because they blend too much with the back ground. I got used to that and does not bother me any. Louie Vazquez in San Antonio TX
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Reviewed in the United States on January 29, 2018
★★★★★ 5
Bueno
Color: C Black
Muy bonito, buena relación precio calidad
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
★★★★★ 1
DOA - doesn't work.
Color: A Gold
Love the looks of this watch but I cannot get it to work. I think that it is mechanical, but I wind it and it only runs for one to 10 minutes and sometimes not at all. Am I doing something wrong?
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Reviewed in the United States on June 28, 2018
★★★★★ 4
nice watch but expect what you pay for.
Color: A Gold, Color: A Gold
Pretty solid watch decent size face i prefer large face watches even with my small wrist. Its pretty good at staying synchronized. The case is pretty solid but closer inspection makes it look cheap, i still love though and it does get a lot of looks. The band is my really only big complaint it feels chintsy and cheap, the clasp spring fellout once but very simple to re-insert and if you have small wrist like me its definite resize. Other than that for the price its a cool mechanical watch.
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Reviewed in the United States on December 16, 2015
★★★★★ 3
Nah....it's OK
Color: A Gold
Product does looks amazing and the manufacturer put a lot of time on designing this affordable watch, i'm using it in a daily basis and still looks like the first day.
Pros: Affordable, great looking, right size
Cons: Lot of condensation, you can see it trough the glass
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Reviewed in the United States on December 15, 2016
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