![]() ![]() I’ve talked about what happens when things go wrong, but what actually causes it to begin with? If manufacturers send out lawn mower spark plugs pre gapped, then what’s causing them to change? What Can Cause Your Pre Gapped Spark Plug To Go Wrong? If it’s wrong, then it can lead to spark plug wear, which will then mean you need to replace the old spark plug with a new spark plug much quicker than you ordinarily would.Īgain, this comes back to how hard your engine and spark plug have to work when the gap isn’t correct, causing low power over time, or even the engine to break altogether. ![]() When installing spark plugs, you have to take extra care to ensure the gap is right. When it isn’t the correct width, engine misfires can occur, meaning it takes a long time for your engine to start, or it will cut out intermittently when in use, depending on your engine type and how poor the spark plug gap is compared to what it should be. Are autolite spark plugs pre gapped manual#The correct width for each model varies depending on the engine model used, etc., but you can find your exact requirements in the owner’s manual to find all the details you need for your push along lawnmower or vehicle’s recommended setting. Misfires in the engine (specifically the cylinder housing) can occur when the specific width the lawn mower spark plugs gaps are supposed to be aren’t met. The result? Without the proper gap, your engine could break beyond repair. This sort of damage is common on outdoor power equipment, because many owners think that if the lawnmower is running, then it must be fine. In many ways, it’s worse for the gap to be too large, though, as the engine will still be able to operate, but the added stress can cause internal engine damage. If the gap is too large, the engine will work harder to burn the fuel mixture, and if the gap is too small, there might not be enough room for a spark to be created at all, meaning the engine just won’t start. If there is too much space or not enough space between the center electrode and the ground electrode, then the engine will need to work harder to create the spark between the two electrodes.Īlthough most lawnmowers will have a spark plug gap that is correctly set beforehand, this can be moved accidentally during shipping or otherwise changed during use (but more on this later). If the current spark plug gap isn’t exactly as it’s supposed to be according to the engine owners manual, then you’ll notice a few different problems. But What Happens If The Spark Plug Gap Isn’t Correct? It is this burning that gets the mechanical parts of the engine in working order, which then allows the lawnmower blade to cut, and the engine to continue running as the cycle repeats and the lawnmower can continue in a perpetual motion until the engine is turned off. The spark begins the combustion process in the combustion chamber by burning the air fuel mixture within. you turn the lawn mower key, or pull on the start rope) and sends it across the spark plug gap to the ground electrode.Īs this happens, a high potential difference is created, and this generates electricity that will cause an electric spark. The center electrode takes the electricity that’s activated when the ignition system is activated (i.e. The center and ground electrodes are essential in starting the engine. Spark plugs are rather simple devices operating in a highly complex mechanical engine that rely almost exclusively on electricity to run.Īs you’ll already know, most spark plugs work when electricity generated at the ignition coil sends a charge from the spark plug’s center electrode to the ground electrode. Ready to find out more? Then join me below. Are autolite spark plugs pre gapped how to#Manufacturers send most lawnmower spark plugs to market pre gapped for convenience, so you don’t have to mess around with the engine when it arrives – the gap is exactly as it should be and the spark plugs can work as they should.īut things can go wrong (and they go wrong often) so as well as talking more about the importance of the right spark plug gap today, I’ll also look at how to double check that you have the right gap before starting your engines. Yes, today spark plugs for lawn mowers are usually released pre gapped, because the spark plug gap is so integral to making sure you can start your lawnmower engine, and that the running engine can keep running. SO, ARE SPARK PLUGS FOR LAWN MOWERS PRE GAPPED? Adjusting Your Lawn Mower Spark Plug Gap.What Can Cause Your Pre Gapped Spark Plug To Go Wrong?. ![]()
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