There shouldn’t be any bubbles or cracks in the porcelain insulator, and the thread must be in good shape. First, gently scrub the plug with a wire brush to remove previous rust or any particles in the cylinder.Įven if your spark plug is new, make sure these are clean, and notice whether the side electrode’s tip is centered on the middle electrode. If your spark plug is used, you must clean them properly before re-gapping. Step 1 – Clean the Spark Plug Clean Spark Plug You can follow the below process step-by-step to adjust the gap successfully. No-start engine conditions How to Adjust the Gap Between the Spark Plug?.Here are some common symptoms of too much spark plug gap – What Are the Symptoms and Signs of Too Much Spark Plug Gap? Image Credit: czarcatsĭoes too much gap between the electrodes mean better flow of voltage? Well, no! The spark plug doesn’t work that way instead, the gap has to be adjusted properly to offer a better voltage flow.īefore we head toward the gap adjustment process, you should know that the incorrect setting of the spark gap can lead to engine problems. Now, compare the existing gap size with the recommended size to know how much adjustment it needs. The process is straightforward, just run one of these tools between the gap of the electrodes and take note of the measurement. You can use a tool, like a gap gauge or feeler gauge, to measure the existing gap. Most of the vehicle’s general spark plug gap size is somewhere between 0.6 mm to 1.8 mm (0.026 to 0.07 inches). That’s why it’s necessary to know the right setting and adjust it accordingly. How to Figure Out the Correct Gap? Image: the gap isn’t appropriate between the two electrodes, it can cause some problems in your vehicle. You can check the vehicle’s owner’s manual to know about the recommended setting of the spark plug gap. But it’s advisable to examine the gap measurement to check whether the gap is set correctly or not. In the past, people needed to create gaps before using spark plugs, but now these are available in pre-gaped versions. The purpose of the spark plug gap is to restrain voltage surges and prevent equipment damage. Is it Necessary to Always Have Gaps in Spark Plugs? The distance between the two electrodes ensures that the correct voltage is sent to the ignited fuel, which then causes combustion and makes sure the engine runs smoothly.Īnyway, let’s get into more details for a better understanding. If the gap size is wrong for your automobile vehicle, the plugs won’t fire efficiently. Have you ever wondered why there’s a gap between the electrodes and why is spark plug gap important? It’s because the gap between the spark plug’s side and center electrodes maintains a specific distance for the engine to function properly.
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