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Terry

I recently purchased a 1982 Johnson 90 v-4 that had not run recently. I have repaired the colling system, new prop, and de-carbed the engine, cleaned the plugs, engine idles OK (4500 prm's), however it will not exceed 2300 RPM's under a load, runs smooth.

Help Terry

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outboardwizard

Hello will need to verify if running on all 4 cylinders spark and compression. If OK try hitting choke primer while running to see if extra fuel helps incresase rpm.

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