You gotta excuse my ignorance and elementary questions as I’m pretty new to this, but what do you mean by back side of the ground strap? I’ll glady take the picture, just don’t know what your talking about
The ground strap is the L shaped piece of metal that protrudes from the plug threads to the gap at the tip of the electrode in the center of the plug.
Here this will help Spark plug reading can be complex and sometimes frustrating task this page will help make it easier and the results rewarding
Read thru the above link
You can learn alot about the fuel and timing reading the plugs correctly.
Report back when you have read the link you will have a good understanding about spark plugs.
Dont be afraid to read it more than once its good info and is the key to tuning any engine.
