I'm assuming you have the plug on the plug wire and the plug is not currently in the motorcycle. You simply place the metal threaded part of the plug on the engine head and it will start firing if the engine is running.
Spark plug gap is where spark plug spark discharge is designed to take place. On a conventional spark plug, it is the area between the center and the ground electrode.
Remove the spark plug wire from the spark plug. Use some heavy gloves or a set of insulated pliers to hold the spark plug wire about 1/4-inch from the engine block (ground) and crank the engine - you should see a spark jump from the wire to the engine ground. For a better check, use another spark plug and put it on the spark plug wire and use it as a "jumper" from the wire to the engine ground.
take the spark plug out of the head. then put the spark plug wire back on the spark plug. ground the plug on the engine you can do this by putting the plug any where there is metal and lay it on it. then turn engine over and see if you have spark. if not then do the same thing with just the wire by putting a Philips screw driver in place of the plug, ground it turn over the engine see if there is a spark if their is the plug is bad. if not then the coil or flywheel is bad more than likely it is the coil
You can check for spark by removing the plug wire from the spark plug and holding it about 1/4 inch from ground. Have some one crank the engine or pull the starter rope and look for a spark to jump from the spark plug wire to ground. DO NOT hold the wire with your bare hands since you will get shocked. If you have spark there, remove the spark plug and insert it into the end of the spark plug wire and do the same procedure. If there is no spark, the plug is bad. If you have spark, the problem lies elsewhwere.
No , all it does it ground out to cause spark just like a spark plug
If you have no gap meaning the electrodes are touching then the spark plug is being grounded therefore causing a no spark situation. There has to be a gap in order for the electricity to jump from the electrode to the ground.
You can change the spark plugs on the 1997 Toyota Tacoma yourself. Remove the ground wire and spark plug wire. Remove plug. Replace the plug with a plug made specially for your model car.
If you have access to a spark tester, use it. Otherwise, remove the spark plug, reconnect it to the spark plug wire, and rest the tip or threads on a good engine ground, AWAY from the spark plug hole. Attempt to start it, and watch for spark. If none, replace the spark plug and try again. If still no spark, the magneto coil may be faulty.
If you have access to a spark tester, use it. Otherwise, remove the spark plug, reconnect it to the spark plug wire, and rest the tip or threads on a good engine ground, AWAY from the spark plug hole. Attempt to start it, and watch for spark. If none, replace the spark plug and try again. If still no spark, the magneto coil may be faulty.
there will, no spark because of one of the following reason; 1 disconnected wire. 2 problem of fly wheel and coil. 3 no gap between ground electrode and terminal
Take a known good spark plug and connect it to one of the spark plug wires. Ground the plug to the block and watch the gap for spark while someone tries to start the engine.
If you use a 1 or 2 ground electrodes spark plug, these must have a 0.9mm gap. Besides, you can use a 4 ground electrodes spark plug (Super 4 from BOSCH) with the code FR78X, wich is able to be used with gaps from 0.9 to 1.1mm