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  1. C

    Trim and tilt issues

    I am having trouble with my power trim on a 1990 4.3 mercruiser. I have the unit with the yellow cap for the reservoir, seems to be a pretty common unit. I cant get it to do anything, so I took the small motor off and it will run when connected to the negative and either the green or blue cable...
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    90 mercruiser spring startup

    I own a 1990 mercruiser 4.3 and this past weekend I took her out of storage to start it up in the driveway. It started up great on the first try but after running about a min or so I noticed the RPMS jump up between 2000-3000. The engine still was idling just the same and the sound of it didn't...
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    4.3 Mercruiser not running properly

    I own a 1990 4.3 V6 Mercruiser and have been having some trouble with it. I have owned the boat for 4 years and it has 550 hours on it A few weeks back I noticed it would not rev up past 4,000rpms and I could not hit my top speed which is normally 42 or 43mph. I replaced all the spark plugs and...
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