Recent content by Fixing mercrui

  1. F

    2001 Mercruiser 496 mag PCM555 overspeed warning

    Thanks! So it seems likely it was a bad switch or out of adjustment switch, not an actual overspeed condition with the engine rpm's? Would you shy away from installing this engine due to the report based on number of times compared to what looks like good RPM data/usage?
  2. F

    2001 Mercruiser 496 mag PCM555 overspeed warning

    I don't know what it means. but the top part of scan says it did happen 1072 times... Is it wrong? Are you confirming based on rest of report it didn't happen? I'm asking for advice what it means, as I don't know, and should I be worried there is damage to internal components because of it that...
  3. F

    2001 Mercruiser 496 mag PCM555 overspeed warning

    Hello experts, I just bought a 2001 466 mag used and this is the report I got from seller. Engine RPM's looked great when i first saw it. Before I install it someone mentioned the overspeed warning may be problematic. I cant imagine it could have damaged the engine as the RPM's don't indicate...
  4. F

    Mercruiser engine revs from 3200 rmp to 3400 rpm and back

    Any chance you feel its the ignition module or ignition coil? They are probably original 22 years old, and it seems like it may not always be firing all 8 cylinders....just a loss of power.....
  5. F

    Mercruiser engine revs from 3200 rmp to 3400 rpm and back

    Hello all, Ive been running my 1998 5.7 ltr mercruiser EFI throttle body corb with Bravo 3 drive. It runs smoothly, no backfires. I feel it used to go much faster. I noticed I was running at 3200 RPM and at times it would go up to 3400 RPM's without touching the trottle, and then back down to...
  6. F

    scoring/grinding sound while in gear

    I accidentally started my 5.7 litre bravo 3 drive engine while the drive was up, and the boat shook heavily, shut it down after 8 seconds. Did it again for another 8 second try before I realized the drive was full up. Now the boat runs and sihfts fine, but I hear a scoring sound while in gear...
  7. F

    mercruiser grinding when starting, missing tooth, hydrolock?

    Hello, I have a 1998 5.7 litre fresh water cooled mercruiser. I am the 3rd oner. This will be my 3rd season using. Orig owner used boat upsate NY in fresh water lakes untill 2007. 2nd owner used boat in saltwater untill 2010. My First season in 2011 no problems. last season towards end, I...
Top