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    Hard to start

    1979 150 h.p. S#5342163 I had a mechanic tell me he did not know what was wrong since he did a complete test including checking spark, compression and fuel pressure. The only thing he would say is he would start with a carb rebuild. Problem is it will not start easily, consistently. Some days...
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    Needs a squirt of fuel to start.

    1979 150hp. Merc. Requires a squirt of fuel directly into the throat of the carb. Choke is working properly.
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    Lower unit lubrication.

    Is there a difference between automotive gear oil and marine gear oil? I was advised to not use automotive, since the marine grade is designed for water/moisture resistance and atmosphere. This seems extremely far fetched and the mark up on anything for marine use makes me cringe. I have a 88...
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    Tilt/Trim diagnose

    My first stern drive motor. Always felt comfortable with outboards, and then I got talked into buying a I/O. 1989 OMC Cobra. The tilt/trim just clicks when I push either up or down. I believe there is only 1 of 3 solenoids clicking when I make this attempt. A little hard to be certain, but I can...
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