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    Mercury 150 poppit valve faulty?

    I have a 1992 Merc. 150 V-6. I replaced the water pump and thermostats after it overheated last time out. I now notice a lot of water exiting the upper exhaust ports when running on plane. The water exiting the pee hole is 145 degrees but the stream looks weak at idle. The engine is not...
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    1992 Merc V6 150 - overheating

    I was out the other day when the continous overheat alarm went off. No water was squirting out of the outlet. I am going to replace the water pump and themostats. I do not have a manual, so any tips on putting the water pump in would be appreciated. Do the water pump kits come with basic...
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    free online mercury manuals

    Here is the link to the free online Mercury Manuals. <br /> http://www.biggerhammer.net/mercury/factory_manuals <br /><br />Hope this helps, Joe
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    Oil injection alarm problems---LOOK HERE

    I have started a few topics about oil injection alarm problems and switchbox troubles. Check out my previous posts to see if you have the same problem that I have. I finally think I have a solution. The problem that was diagnosed with the help of many of our fellow posters is that a faulty...
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    Mercury Black max oil injection

    My oil injection failure warning horn went off again today. I switched right to a spare premix gas container and idled bake to the dock. Does anyone know where I can get a oil pump cover kit so I can just run pre-mix from now on. I checked the oil pump nylon adapter and steel driven gear and...
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    1992 Merc 150 V-6, oil alarm

    I went out fishing and on the way out everything went fine. On the way back, the alarm went off. The main oil tank was 1/2 full and the reserve was completly full. I replaced the low oil sensor 1 month ago. The alarm beeped every few seconds and did not stop until we got back to the dock. The...
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    Switch Box Troubles?

    When switchboxes go bad, is it possible for it to work one trip, not work on the next and then start to work again. My 1992 V-6 150 Merc ran perfect one week, then the next time out the right 3 cylinders wouldn't fire. Last week I swapped the wires on the switchboxes and the same 3 cylinders...
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    1992 Merc 150 V-6, firing on 3 cylinders

    I ran this engine 2 weeks ago and it ran perfectly. Today, I started it up and it sounded a little sluggish and idled roughly. It would die when I accelerated under power. Brought it back home and let it idle with the muffs on. I pulled the plug wires off one by one when it was idling and the...
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    91' Merc 150 oil reservoir leak= strange

    Went to start it up after sitting for the winter and it started right up. But the oil reservoir on the engine leaked out of thru the top cap that includes the low oil sensor. I took the cap off and retightened it, but it still leaked when the engine was running. Both oil reservoirs are filled...
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