[pappastratos]

Are the 1999 Mercury 250 EFI good motors ?

 

[stringle]

I may get flamed by the mechanics, but I have to say I have 1999 200s and they ROCK! You can't kill them. I could pour beer in them and they run like raped apes. Just look at them cross-eyed and they scream. Really. Don't take my word though, the experts should chime in soon...

they are thirsty

 

[Lickety-Split]

I'm no expert, but the way I understand them is very solid performers, pretty dependable, and not very fuel effient.