On a carburetors motor pull the coil wire from the distributor cap (the plug wire in the center of the distributor). This is usually found between the air cleaner and the firewall. Remove the desired spark plug from the engine block, plug it into the coil wire and touch the spark plug body (the metal portion) to the engine block while cranking the engine. You will see spark if the plug is good.
take a test light. ground the test light to the battery then take the test light and move it around the suspect spark plug if the plug wire or spark plug are cracked or defect the spark will go to the test light and you will see the spark. if you don't see any spark its not broken.You can also use CheckSpark to quickly evaluate all your plugs and identify bad plugs and wires in seconds.
If you know that there is spark at the distributor cap then I would think it would be bad spark plug leads.
A drain plug for a spark plug? Now why would there be? What would you drain from a spark plug.... the spark? If you're referring to a plug for the spark plug socket, I'm sure you could find something that would fit that would keep out debris while you let you engine sit without plugs. (Why??)
Yes, its just like a spark plug tester. Just stick the point end between the sparkplug boot and the clip inside the boot then connect the alligator clip end to the spark plug. viola spark tester.
bad spark plug wire.
Pull the wire off the spark plug, pull the spark plug out, plug the spark plug back into the wire, then have someone turn the engine over. You should see a blue spark jumping around the very bottom of the spark plug.
remove spark plug from engine leave the wire connected and try to start it id the spark plug sparks your good
Remove the spark plug wires from the spark plug. Be sure to leave the other end attached to the distributer cap. Then remove that spark plug from the cylinder with a spark plug wrench and re-insert the plug into the spark plug wire boot that you previously removed. Have someone turn the inition key as if starting the engine. Stay clear of moving parts etc. while observing the spark plug end. You should see a spark.
To perform a weed eater spark plug replacement, first ensure the engine is cool. Locate the spark plug on the engine and use a spark plug wrench to remove it. Check the gap on the new spark plug and adjust if necessary. Install the new spark plug by hand, then tighten it with the wrench. Finally, reconnect the spark plug wire and test the weed eater to ensure it is running smoothly.
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.
take the number one plug out of the engine. plug the wire back on. place somewhere the plug will be grounded. have someone turn the engine over and see if there is spark.