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FC no spark after rebuild.

Old Dec 4, 2025 | 09:01 AM
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AL FC no spark after rebuild.

Hey guys. I'm new to the rotary world and picked up a 1991 FC convertible in March 2025 as my first car .

it recently came down to needing a rebuild after 152,000 miles. I did all the work myself learning as I went and put the motor back in and hooked all back up on Dec 2, 2025.
when I went to start it, it turned over amazingly. it sounded better than it ever had. But it wouldn't start. I've discovered its a no spark issue and i'm wondering what I could have missed??
I've heard of an ecu ground on the S5 but I haven't been able to locate it. I'm thinking it could be that. any pointers would be cool, along with any feedback if I said anything dumb in this thread.
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Old Dec 4, 2025 | 03:05 PM
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Martin S.
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Where in Alabama are you?
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Old Dec 5, 2025 | 08:33 AM
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Madison Area
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Old Dec 5, 2025 | 08:57 AM
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Toney area*
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Old Dec 12, 2025 | 03:11 PM
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Martin S.
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I am in Toney.
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Old Dec 15, 2025 | 08:33 AM
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I've since figured out the no spark issue. It was the Ecu ground. now I have the battle of it actually starting. I've tried cranking it repeatedly. It hits off 2 stroke mix poured down the intake. But nothing off the fuel pump. I'm going to put 5 gallons in the tank hoping that it's just empty. But other than that I also have the weather fighting me.
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