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    Merc 260 low engine vacuum

    5.7L Mercruiser, only pulling a vacuum of 10 at idle (750rpm), should be closer to 20. The timing is right on 8*btdc as it should be at idle. I have leak tested with propane as well as carb cleaner and can not find any leaks. The compression is very good, around 160 on all cylinders. The manual...
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    what is the best way to re-seal the rub rail?

    I have a 1984 Dixie ski boat and it takes on some water from the rub rail. I can see gaps in the silicon sealant on the bottom side of the rub rail. I suspect this is where it gets in. 1. Can I simply re-seal over the existing silicon that is already there? 2. If not, how to remove existing...
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