Junebugman Posted September 13, 2015 Posted September 13, 2015 Hi this motor is on my starcraft 17.5 foot pro bass boat the stator trigger are good but still no spark yet any good wrench guys on here for old mercs thanks. Quote
spartyon8 Posted September 13, 2015 Posted September 13, 2015 How about coils and wires? There was also an emergency "switch" on my 75hp that wouldn't allow spark to the coils. The switch is meant in case you hit something and the motor jerks it would sense and shut off all power. Unfortunately, if the switch goes bad then no spark either as was my case. Quote
Super User Way2slow Posted September 13, 2015 Super User Posted September 13, 2015 I'm by far no expert on them but I do have an 88, 115. Mine died on me a few years ago while in Floridaand it was because the idle control module shorted and took out the stator low speed winding, and both trigger modules. You do know there are two sets of windings in the stator, one set provides low speed signal to the trigger modules, so if you are positive the trigger modules are good, then you might want to check the stator. Might also want to disconnect the idle control module, it's not required to run, just to make sure yours hasn't pulled the same stunt mine did. Quote
Super User fishnkamp Posted September 13, 2015 Super User Posted September 13, 2015 I have had several Mercury outboards from that time. I had a 35 HP, 50 HP, a 75HP and a 115 HP.. They share a lot of parts just more as the number of cylinders increases. If your 115 is the inline 6 115 then have your dealer check the power packs( ignition modules) I know that in the 1986 and 87 models they had a batch issue. Over the years I replaced a pack in each engine. If you replace one pack replace them all as the weak ones will fail shortly. After replacing them I never had to do it again. The symptom was always like a dropped cylinder and a loss of spark in that cylinder. If that is your issue the repair is pretty simple, just costly. Quote
Junebugman Posted September 14, 2015 Author Posted September 14, 2015 Thanks guys stator checked good but the trigger was bad I found a bunch of switcheboxe's fairly cheap 100.00 or less the motor only had spark on cylinder 2/4 nothing on the rest would a bad trigger do this or combo trigger/power pack thanks. Junebugman Quote
Junebugman Posted September 14, 2015 Author Posted September 14, 2015 Thanks guys stator checked good but the trigger was bad I found a bunch of switcheboxe's fairly cheap 100.00 or less the motor only had spark on cylinder 2/4 nothing on the rest would a bad trigger do this or combo trigger/power pack thanks. Junebugman Quote
Super User Way2slow Posted September 15, 2015 Super User Posted September 15, 2015 I hope this link works because it sounds like the same problem you are having and is a pretty good discussion on the matter. http://continuouswave.com/ubb/Forum3/HTML/020581.html Quote
Junebugman Posted September 19, 2015 Author Posted September 19, 2015 I read it those guys jmh etc seem like they know a nut from a bolt lol thanks! Junebugman Quote
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