whats up, i am new to my 76 ski doo and know nothing about them. last summer i got this one for free and had it running for the most part (some fuel delivery issue), but now that the snow is falling she again doesnt run. now the issue is a no spark. i was told that the kill swithch is the first thing to check, it was a broken, but i think it still functioned, so i grounded both sides and still nothing. i replaced the plug wires, and cleaned the tips of the mags, but i have no idea where to go from here. please help me, i wanna use this thiing this year.
Voltmeter - set it on the resistance setting and check resistance between the 'power' leads, resistance between plug tower and ground, and resistane between plug tower and 'power' connections. The "I don't know electricity" method to test the coil pack is to get a plug, set it on the engine ground then take a pair of wires and momentarily TOUCH a 12v battery - it should spark real strong at the plug - don't hold the wires on the battery as it'll burn up the coil.
If it's a dual cylinder then chances are that it's NOT the coil as the chances of both going bad at once are pretty darn rare. Actually I'd say it's in the wiring as if it's a dual cylinder that means 2 points, 2 condensors, 2 coils - each one almost acts like an independant 1 cylinder engine (they share a common magneto coil though).
Pull the electrical harness connection by the engine that runs to the handlebars - if it starts or you have spark then you've got a wiring/switch problem. If no spark still then start troubleshooting - you'll probably have to pull the starter rope and get to the points and clean/replace them.
hi there i'm new to this sight but see that u have same problem with no spark my kids sled is 1977 bombadier tnt everest with a 399 not original motor but last year it did the same thing . when it did start it run good for few hundred feet then stall out wait 5minutes then run another few hundred feet stall out .brought it to shop it was in the stator plate replaced that ran fine for a while but did the same thing . this year it only has spark on clutch side not other external coil is good but internal keeps failing about tired of it.dont know anymore.somebody told me it will only spark one side until its running then both will engage dont really know.
they both should have spark at all times. if the stator was replaced i really do not think that would be the problem. check your carb settings and if you only have spark off of one coil then check your wiring because you should have spark coming off of both.
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