I have had the motor to a marina and he said the problem is in the ign. system. Sai it cost up to 1000 to fix. My brother and i would like fix it ourselves . Since it looks like it will just be replacing parts. But we need to know where to start. The motor has been hard to start for awhile, so I had it tuned up for the summer.It also would not start after running for awhile. tune upped, but still having the same problems. Mech. said it must be in the ign. system since it acts up when it gets hot. Stator, trigger, what ever.
<br />The electronic ignition system parts on outboards are stupidly expensive,so you want to test each component forwards and backwards to be sure the old one is faulty, before buying new ones.<br />The 85-150HP Force engines have a tendancy to develope leaks in the exaust port plate gaskets.Look for a new-looking plug or two. They may be steam-cleaned due to this water.<br />The plugs say a bunch about what is happening inside an outboard.If the plugs have more than 1 hour on them, they should show a color other than white...A nice coating of "powdery" dry black, brown or gray is normal. White, shiny clean is not,after a period of running.<br />A compression test cold, and one when symptoms occur, may give a clue as to what may be up wirh it.