Re: 95 90hp merc
Check for spark, either by removing all the plugs and reinserting in the boots & grounding to the block (then crank over the engine), or with the engine running, clamp a timing lite around each spark plug lead.<br /><br />If you find you have spark, likely the troubles are in the carbs. At a minimum, remove the external plugs over the main jets and inspect with a strong lite. Flush fuel thru the carbs and see if you get good flow out the main jet.<br /><br />If that doesn't help you'll need to dismantle the carbs for cleaning. Make sure you don't have issues with the external fuel supply, too.<br /><br />If you lack spark, could be from a number of things; Bad stator, bad ign module, bad trigger assy, bad coil. There is also a strange problem on these motors; failure of the hi-speed windings will cause the motor to not want to run fast; however you'll see spark at idle. <br /><br />You can eliminate this as a problem by taking resistance readings of the stator windings. You'll want a good manual such as Seloc in front of you when you're doing this. Try eBay or the vendor links at this site (or perhaps your local library).<br /><br />HTH and Good Luck.......ed
