Reply To: Mercury 110 9.8hp no spark

[Fbnlny]

Hello guys,

as this thread fits the topic, I hoped someone here could help me.

I am working on a 1971 Mercury 7.5 with S/N 31xxxxx.

I am currently waiting for new insulator blocks to arrive, as the spark is somewhat unreliable, so I tested everything else… When I performed the stator-resistance test, I got a weird value: no cont. with positive to green lead, as it is supposed to be. But a couble of megaohms if I switch the leads, instead of a 20-50 kiloohms.

Now what I find weird, when disconnecting the points and tapping the coils to ground, the plugs arc every single time and I have bright blue spark. The test tells me, that the stator is toast, though it still fires the plugs just fine. Do you know if the stator is broken or still usable?

Thank you

Fabi