Why does my Ford truck have a misfiring spark plug?
Why does my Ford truck have a misfiring spark plug? For that reason, checking the spark plugs is a shortcut towards checking engine health. Antifreeze leaking into the spark plug tubes or intake manifold will result in an engine misfiring, too; although in this case, you likely also have a blown head gasket. Figure 4. Why is the left plug on my Ford truck not working? The plug on the left is covered in deposits and will not work as well as the new plug on the left. Compression is vital in an engine since it raises the pressure of...