Just wanted to know if anybody has encountered a problem like this:

We have a Mercury 225 EFI engine that will "decide" on its own when to
start... or not start. This problem has been going on for 4 years and the
engine has seen several certified repair techs in the Fort Myers Florida
area. We have been towed back twice in the past year because the engine
would not start no matter what; then it would start immediately the next
morning. Everybody has an opinion but even after many "repair" bills, the
problem only gets worse. The engine won't start at all at this point and
still nobody can find the problem.