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  1. Whitemustangman

    3.0 mercruiser valve adjustment

    Maybe someone else has ran into this, I recently rebuilt my 3.0 and it runs good but really rich no matter I did, I did compression test and only 87-90lbs on all cylinders. I back the valve adjustment to zero lash with no preload on the lifters and get129-130 acrossed all cylinders…. Are my...
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