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    9.9 Evinrude 4 stroke carb modifications for idle

    All, I have been working on outboards for nearly 30 years. I recently ran into the need to do the carb modification on an early 2000's 4 stroke 9.9. It worked amazing actually. My question is why this is needed on a motor that idled down perfectly for more than 15 years, then all of the...
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    Advice needed please

    Hi all,<br /><br />I recently purchased a mid 90's 21 ft boat with a 454 engine. The block was cracked when I bought it. I am fairly mechanically inclined, and really planned on removing the motor myself. I had a mechanic look at the block and it was just the block that was cracked, nothing...
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