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Old 05-16-2018, 10:05 PM   #1
Paulhpffman
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Default 91 750 no spark

I just bought a 91 750f that hasno spark. I have replaced the ignition coils cause they were the cheapest starting point. Next I checked the pick up coil and had a inconsistent reading ( did it my self gonna try again with a third hand). What is the range for those? And is there any other parts that would make the bike not spark?
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Old 05-17-2018, 06:49 PM   #2
Kreylyn
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Originally Posted by Paulhpffman View Post
I just bought a 91 750f that hasno spark. I have replaced the ignition coils cause they were the cheapest starting point. Next I checked the pick up coil and had a inconsistent reading ( did it my self gonna try again with a third hand). What is the range for those? And is there any other parts that would make the bike not spark?
Verify the coils are getting a minimal 11v when the starter is turning the motor over, or you will have spark issues.

It's possible the ignitor is bad, but no real way to test other than swap with known good.

Check the ignition switch is working properly. A bad switch can cause issues with turning the ignitor on.

Krey
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Old 05-17-2018, 08:53 PM   #3
Paulhpffman
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thanks. how would i go about checking the ignition switch? the pick up and a used ignitor are about the same price which way should i go? I've exhausted all my knowledge about working on motorcycles just don't know what direction to go.
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Old 05-17-2018, 11:25 PM   #4
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thanks. how would i go about checking the ignition switch? the pick up and a used ignitor are about the same price which way should i go? I've exhausted all my knowledge about working on motorcycles just don't know what direction to go.
Volt meter to verify each wire is getting proper output, may also want to do a disassembly and inspection of the internal switch where the wires are soldered on. It's not uncommon for there to be a few broken wires there making for an issue in resistance.

I'd do the igniter... I've seen plenty of those go bad, only heard of once for a pickup going out.

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