The motor first mixes gasoline and air in small quantities and then ignites the mixture inside a cylinder with an electrical spark. As the hot gases from the explosion expand, they push a piston, which in turn is linked to a shaft that transfers power to the transmission and ultimately the wheels. This process occurs thousands of times per minute, but for it all to work, the source of the sparks, the spark plugs, must fire consistently.
Spark plugs are constructed of an insulating material and a metallic conductor. At the top end of the plug, the tips connect to the spark-plug wires and send an electrical current down the interior of the plug to the electrodes. There are two electrodes separated by a small gap; as the current approaches the end of one electrode, it effectively "jumps" across the gap to the opposite electrode and creates a visible spark. One of the key factors that makes a spark plug work well, or not, is the size of the gap between the electrodes.
If the gap is too small, the spark will likely be too weak and cause the engine to run poorly or with poor efficiency. However, if the spark plug gap is too large, the spark is unlikely to consistently "jump" across the long distance between electrodes, thus leading to a rough-running engine or one that doesn't run at all. Sign in here. Spark plug gap, does it really matter?
Share More sharing options Followers 0. Recommended Posts. Posted July 3, Link to comment Share on other sites More sharing options Simon Posted July 3, It's fairly critical. Gap them to spec, and she should run better. Simon, That is what I would have thought. Pasted: The gap adjustment can be fairly critical, and if it is maladjusted the engine may run badly, or not at all.
BowTied Posted July 3, SilverPath Posted July 3, Factory Service Manual. Precise1 Posted July 4, Posted July 4, Leave them the F alone!! They are good for k, all you are doing is wasting time and stressing the threads!! BowTied Posted July 4, Posted July 4, edited. Change interval? Oil change or spark plug change? BowTied Posted July 5, Posted July 5, Posted July 8, BowTied wrote: "Once in leave till the next change interval. Create an account or sign in to comment You need to be a member in order to leave a comment Create an account Sign up for a new account in our community.
Register a new account. Sign in Already have an account? Sign In Now. Amps are what kill you when you get shocked. Stun guns have up to 1 million volts, but no amps so they aren't lethal. Hell, static electricity you get when you shock yourself against a door knob or your car door can be upwards of , Volts or more, but does it kill you? Your house electrical current can kill you too, but it's only Volts, BUT it has 15 - 20 Amps pushing that Voltage behind it.
Get hit by your house's Volt system are you will most likely die. Not because of the Volts. Again, it isn't Volts that kill you think of a stun gun , it's Amps. Most Volt outlets are for running heavier equipment such as your dryer, a welder, etc, and have between 20 - 50 Amps behind them. That kind of current will light your ass up and fry you, but a 50, Volt jolt from a spark plug won't, unless you are screwing around with a serious ignition system like what a Top Alcohol or Fueler engine runs with 40 Amps behind them.
They even have decals on the tops of the dual magnetos saying "Caution! Lethal Current". Your ignition system may have lots of Voltage, but no Amperage. This gets even more true when you are running too rich and have too wet of a mixture.
It's harder to light a fire in the rain than it is on a dry summer day. Inside your cylinder isn't much different.
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