ferencg, please take Nordin and JerryJerry05's advice before you invest a dime in a pack (like I foolishly did) or any other component. I also own a 1990 Force 90 just like yours (it's on a Bayliner 18' Runabout that I have rigged with a kicker for fishing). What those guys are talking about is VERY cheap, easy to do, and most important is the first logical step to be followed for your situation. Don't assume any component is bad until you've checked all connections. The chances of both ignition circuits in your #2 pack being bad is far less (although not impossible) than the likelihood of broken wires on your trigger leads. As JerryJerry said, if you find one bad, just redo them all (so that problem won't come back to bite you again on possibly another cylinder). You don't need to rewire packs, just go to your trigger leads and give them a little tug, see if any give way. Also, you can disconnect all your trigger leads (don't worry they're numbered and each one is uniquely color coded-they idiot-proofed it for guys like me). Put an ohm-meter on each pair of leads, one set at a time and flex each wire in its terminal. If you get ANY intermittent continuity, don't second-guess it, just replace the terminal (solder or crimp) and ensure a good solid connection on each pair of trigger wires. As Jerry said, you can do the same for your pack leads as well. Also, you said #3 coil is goo, did you try to swap the #3 coil up to #1 or #2 to see if the misfire moves with the coil? Just because a coil's primary and secondary windings read good resistance (within specs) doesn't necessarily mean it's good. You can have flash over at high voltage (secondary windings) during operation, and that can't be detected when you just read out resistance through each set of coil windings. JerryJerry05 and, Nordin are pretty "thrifty" guys (notice I didn't say "cheapskates"), but they don't like to see people waste money replacing parts that may not have anything wrong with them unless a proper, logical troubleshooting sequence leads them to that. Follow their sage wisdom, it'll save you moolah in the end.