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    80's 150HP black max problem (won't run when shifted)

    i know how a traditional carb works like on anything other than a boat. push handle, carb opens. i push my handle and the carbs are cracked just slightly....can you share a pic of what its supposed to look like at wot? my boat seems to have good power its not like its running super sluggish or...
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    80's 150HP black max problem (won't run when shifted)

    Not to hijack this thread just a quick question....are the carbs supposed to open all the way when at wot with the boat off or is that vacuum controlled?
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    idle stabilizer or low speed/high speed spark advance module 81 merc 150

    HI, i have been looking around and reading about this idle stabilizer. nothing i see is promising so i was looking into deleting this as the red/white wire coming from the module is literally falling apart in pieces to begin with. Here are my questions..... #1. What does this unit exactly...
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    1980'ish black max 150 losing all power after running for 30 minutes

    Ok, new update All the lines are now brand new including the fuel filter/separator. The Tank has absolutely no vent issues as I can easily blow through the lines and get virtually no resistance and hear it coming out of the vent. I think i have a couple problems going on. Where the fuel lines...
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    1980'ish black max 150 losing all power after running for 30 minutes

    Just an update...ran rhe motor again this weekend and had much better luck as long as i drove mostly in a straight line....forgot to mention this happens mostly when pulling a tube and making sharp turns
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    1980'ish black max 150 losing all power after running for 30 minutes

    So I took a look at the switch box and it seemed to be fine. I've read that these motors were notorious for having the stator go out after heating up. Not sure how to check that without just replacing it (which i dont want to do if it isn't necessary). I took the cap off the fuel tank when the...
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    1980'ish black max 150 losing all power after running for 30 minutes

    Hi all, I have a 1980'ish black max 150 that runs decent at idle and runs very well at high speed, for about 25-30 minutes (sometimes less). When it goes to die it acts like the fuel is being slowly cut off and it Boggs its self out. I can squeeze the bulb and it will start back up after a few...
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