paulswagelock's Recent Activity

  1. paulswagelock replied to the thread Mercruiser 496 (8.1L) overheating.

    Coolant temps should be 165 to 170. Manifold temps should be 200 but not much higher or you will go into limp mode. You can pull one...

    Feb 19, 2019 at 7:06 PM
  2. paulswagelock replied to the thread Mercruiser 496 (8.1L) overheating.

    Replacing coolant if you choose to (but it is not going to solve your issue) is simple. There is a drain plug in the block on each side...

    Feb 18, 2019 at 1:34 PM
  3. paulswagelock replied to the thread Mercruiser 496 (8.1L) overheating.

    The 8.1 can have several cooling issues. If your gauge showed 175 degrees and you went into guardian, then it is not the antifreeze side...

    Feb 18, 2019 at 1:29 PM
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