Reply To: 1960 Evinrude 5.5 Fisherman Powerhead

[Don]

Far fetched perhaps, but surely within the realm of possibilities.   It is so important that we always consider the simple things, just like this.  When we skip over the simple stuff, we create more confusion, make incorrect assumptions, and waste plenty of time and money looking for more complex problems that don’t really exist.  I use the word “we” to include myself in this group.  It is always best to stick to the simple stuff, then return to the simple stuff before getting buried in false assumptions looking for more complex issues that don’t exist.  In this case, this engine’s lower plug hole is buried down inside a tall lower motor pan, so messed up plug threads are surely a reasonable possibility.