Use a multimeter/multitester to check and see if there is voltage and current. Or if you really want lay a screwdriver across the red and black wires... just kidding please don't do that. Put the black lead of the multimeter to ground (the chassis) and the red to the wire and you should get a reading. They offer cheap them cheap online, the multitesters are the cheap ones, and usually you just touch it to the wire to get a voltage reading.
Check the plug and the wire.
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.
Do you have a wire that goes to the top of the engine then yes you have a spark plug
Spark plug wire not connected to spark plug? Spark plug wire connected to Wrong spark plug? Vacuum line disconnected? Bad spark plug or wire?
The easiest way to find out is to remove the wire from the spark plug and hold it about 1/4 inch from ground (the engine block is good) while someone cranks the engine in short bursts. If you are getting spark you should see a blue spark jump fromt the wire to the engine block. You might want to check all spark plug wires while you're at it. If you want to check the spark plug while you're at it, remove the spark plug and attach it to the end of the wire before checking for spark. If you get spark through wire but not through the spark plug, the spark plug is bad.
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.
bad spark plug wire.
If you mean that the wire came out of the boot, then pull the boot off of the spark plug and use a spark plug socket to remove the spark plug.
Your weed eater spark plug may not be firing due to issues such as a dirty or faulty spark plug, a disconnected or damaged spark plug wire, or a problem with the ignition system. It is important to check and replace the spark plug if needed, ensure the spark plug wire is connected properly, and troubleshoot the ignition system to resolve the issue.
Use insulated plug wire puller to notice if the engine slowes down and misses when wire is removed
If a 1998 mountaineer crank will not start, check for faulty spark. This can be done by removing a spark plug wire or coil pack from one of the spark plugs. Then insert an extra spark plug into the wire or coil.
you might want to check your coil or your plug wire