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In Line Spark Plug Tester Ignition System Coil Engine Auto Diagnostic Test ToolDescription:Ignition spark tester with spark gap. The tester can show if there is ignition voltage and its intensity. In contrast to spark plugs, spark gaps can be tested on this tool. So you can check the power reserve. You can adjust the spark gap by turning the adjustable screw. A good and intact ignition system should have a clearance of at least 15 mm. Advantage of ignition spark tester： Determine the quality of the coil based on the color of the sparks and the flashes in the distance Intuitive and easy to understand the operation of the ignition coil Alligator clip securely fixed to the ground Screw assembly allows quick and easy adjustment of spark gap Avoid fire, burnout of ignition coil, etc. Operation： 1. Unplug and connect it to the tester, you can put on / unplug the adapter if needed. 2. Ground the alligator clip of the tester. 3. Set a gap of 10 mm on the tester. 4. The tester must be placed at least 5mm from anywhere in the vehicle. You can use a belt or other fixed tester. It is important not to place the tester near the vehicle ground or sparks that may cause a short circuit to cut to any grounded component and will not properly jump in the tester. 5. Use the ignition system to start the vehicle and observe the spark gap. Warning： 1. If the engine has more than one cylinder, make sure that all other plug connectors are grounded; otherwise, this may damage the output stage or other components of the ignition system, such as fatigue coils. 2. Keep in mind that if the carburetor is not emptied and the fuel supply port is not disconnected, the removed spark plug may release explosive mixture from the socket, and the spark gap works like an open flame and is easy to catch fire. This mixture can cause an explosion. Package List:1X Spark Plug TesterPaymentDelivery detailsReturnAbout usContact usPayment1.We accept PayPal payment,PayPal Credit,Credit card or debit card and so on.2.Please pay immediately after purchase.3.We will leave a positive feedback immediately after payment is received. We appreciate a positive feedback as much as you do. If for some reason there is any issue with the purchase, please contact us prior to leaving feedback, we will be glad to work together and provide a satisfying solution.Delivery detailsOrders will be shipped within 1 business day after payment confirmation. We have warehouses in the USA, UK, Australia. Delivery times range from 2 to 8 working days. We will ship the goods according to your payment address. Please note that the mailbox cannot receive items. Please do not fill in your email address. Make sure it is correct and include the phone number for delivery. If you do not receive your order within the estimated time, please contact us and we will do our best to solve the problem for you.Return All of our items are backed with a 30-day return policy. We ensure all our items are new and in excellent condition prior to shipping. In case you receive the item that is not to the standards above, please contact us via e-Bay messages. All returns must be in new original condition as received and should be shipped with delivery confirmation Please note that all returns must be pre-approved by us. Unauthorized returns will not be accepted. If you need to return, please check twice to confirm the item not work and contact our customer service representative, let us know the detailed problem and send us some pictures for confirmation. We ONLY accept returns with original package. Please make sure that item has NO man-made sabotage. Used items will not be accepted for return.About usWe are a professional distributor of on-board diagnostic tools and automotive electronics for more than 10 years. We have offices and warehouses in the United States and Australia, the United Kingdom to ensure fast shipment and after-sales service. We have more than 100 employees dedicated to customer satisfaction. Tax Terms: We are not responsible for local taxes for buyers, please consult your local customs office for tax details.Contact usOur customer-oriented service strives for positive feedbacks with all 5 star selling ratings. Please feel free to contact us via eBay message once you have any question before you giving us negative feedback or open case. We will reply in 24 business hours. Business time: GMT8 (9:30-18:30) from Monday to Friday.On Aug 16, 2023 at 21:07:50 PDT, seller added the following information: