The spark plug gap for a Chulan Starway 50cc moped should be set at .4mm. The best plug for this vehicle would be an Iridium plug.
most 50cc 4 stroke takes 5/8
Ngk c6hsa
There are lots of reasons for it not starting. Here are some. No fuel. Blocked filters. Wrong air/fuel ratio. No spark. Flat battery. Damaged spark plug. Damaged leads. Water on the electrics.
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.
Spark plug wire not connected to spark plug? Spark plug wire connected to Wrong spark plug? Vacuum line disconnected? Bad spark plug or wire?
To change the spark plugs in a Chevy Celebrity: 1. Give the spark plug boot a twist to free it up from the spark plug, then pull on the boot to remove the spark plug wire from the spark plug. 2. Use a 5/8" spark plug socket with an extension and ratchet or breaker bar to loosen then remove the spark plug. 3. Set the gap on the new plug to .045" then screw it back into the spark plug hole in the head. Tighten the spark plug and replace the spark plug wire. I change the spark plugs one at a time to keep from getting the spark plug wires on the wrong spark plug.
I've just replaced my Torch E7RTC spark plug with a NGK BPR7ES. It works perfectly. Fitted to a Generic Ideo 50cc Scooter (2012).
Champion Spark Plug QC12YC
Give the spark plug boot a twist to free it from the spark plug then pull it off of the spark plug by the boot.
if you didn't space your spark plug right will they spark
It may be that the spark plug is dirty. Try cleaning it
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.