Syncronizing 2000 Mercruiser twin 5.7 EFI Horizons

Harley558

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May 13, 2009
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I have a 2000 Sear Ray 310 Sundancer with twin Mercruiser 5.7 EFI Horizons.

During the winter I changed the spark plugs, oil, etc.... I am not sure in the process I may have stepped on the throttle cables as my engines are no longer syncronized. In order to syncronized the engines, I have to give the port engine about 3 to 400 hundred RPM'S more to get the guage in the middle. Also, My Starboard engine peaks out about 500 or so RPM'S less then the port engine. I can get the port engine to about 4400 hundred RPM's and only about 4,000 on the Starboard engine.

How do I sycronized the engines? Did I mess something else up?
 
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