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Old June 16th, 2007, 12:38 PM
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TubePuller TubePuller is offline
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Location: Dayton, OH
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Default Mercury 3.0L stalls and tough to start when warmed up

Hi all,

Have a Baja Islander 19 with a Mercruiser 3.0L engine. Got the boat last fall, ran it a few time and put it up. Took it out this year and it started up fine. After warming up whenever I go to idle it runs at a very low RPM 7-800 and will eventually die. It makes it tough to dock. I do not believe it is the shift cables because whenever I shift from neutral into gear (forward or reverse) it will run for a few seconds then it slowly dies. I believe it might just need a tune up. I am an OK back yard mechanic. What are the steps to tune up a Mercuriser 3.0L with Electronic ignition. Is there an online MX manual that explains how to give it a tune up, or is this something I should let a Mercury dealer do. If I go the dealer route what should it cost (ballpark price) I live just north of Cincinnati OH.

Thank you from a Newbie to this forum.
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Old June 16th, 2007, 12:52 PM
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Haut Medoc Haut Medoc is offline
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Location: seattle, wa
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Default Re: Mercury 3.0L stalls and tough to start when warmed up

Welcome to iboats......
Impossible to steer you in the right directon on a manual without a year or preferably a serial #........
A tuneup should be 1-2 hours plus parts......
If you are not helpless & have some tools, timing light, etc., it is doable.......
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Disclaimer!: In my inexpert opinion......
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Old June 16th, 2007, 03:28 PM
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TubePuller TubePuller is offline
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Default Re: Mercury 3.0L stalls and tough to start when warmed up

Serial # OC539122 Model # MCM 3.0 liter, Mercruiser Alpha 1 3.0L

I have a good selection of auto tools. Do not have timing light but always looking for an exucse to get something new.

Thanks for the help.
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