![]() Now if you are really curious how it works, below is a very brief description of the whole process: ![]() ![]() Having a single ignition coil per cylinder allows for a maintenance free ignition system as you have fewer moving parts to wear out that eventually need to be replaced such as: In a nutshell, the role of the COP ignition coil is to create and deliver spark to the spark plug. While it's not essential to know how the coil-on-plug COP ignition coils work on your Nissan Sentra, I've included a brief description of how they work (for those of you who would like to know the how and why). This is why a spark tester becomes an indispensable tool. NOTE: You run the risk of damaging a good ignition coil by pulling the coil off the spark plug while the car is running (to listen for the audible clicking sound the spark makes).Īlso, this way of checking the ignition coil for spark will not give an accurate test result. If you need to see what this tool looks like, you can see it here: Wire Piercing Probe.Although this tool is not an absolute must, if you do buy one, you'll realize just how easy it makes testing the voltages inside the wires.Don't have one? Check out my recommendation: Abe's Scan Tool Recommendation.A scan tool is not needed to check the ignition coils with the info I'm presenting in this tutorial but it does come in handy to retrieve the misfire DTC (Diagnostic Trouble Code).If you need to buy one, you can buy it here: OTC 6589 Electronic Ignition Spark Tester (at: ).To find out more about this inexpensive yet accurate spark tester, go here: The HEI Spark Tester (The Best Spark Tester On The Market) (this article at: ).With the HEI Spark Tester, you can conclude that the ignition coil is good if it sparks. You don't have to interpret the spark's color or its weakness. I'll recommend one that is the most effective (and cheapest) out there: the HEI Spark Tester (KD Tools 2756).įrom personal experience (I work full-time as an automotive technician), the HEI Spark Tester is a must-have tool. The most important tool that you'll need to see if the ignition coils are sparking is a spark tester. What Tools Do I Need To Test The COP Coils Let's take a look at some of the basic tools you'll need to diagnose and fix this yourself. If your Nissan Sentra is exhibiting any of the above symptoms, chances are you have a bad ignition coil on your hands. If more than one ignition coil is bad, your Nissan won't start.Smell of raw gasoline coming out of the tailpipe.You'll also see one or more of the following symptoms: You'll also see the Check Engine Light (CEL) shining nice and bright on your instrument cluster and one (or more) of the following diagnostic trouble codes: The most obvious symptom of a bad ignition coil is an engine miss when idling and when you accelerate your Nissan on the road. If a COP ignition coil fails, that cylinder will go 'dead' with no spark and a misfire will occur. The coil-on-plug (COP) ignition coils create and deliver the spark that each engine cylinder needs to burn the air-fuel mixture it contains. You can find this tutorial in Spanish here: Cómo Probar Las Bobinas De Encendido (2000-2006 1.8L Nissan Sentra) (at: ).ĪPPLIES TO: This tutorial applies to the following vehicles: TEST 4: How To Do A Cylinder Balance Test.TEST 2: Check The Ignition Coil For Spark.What Tools Do I Need To Test The COP Coils.
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