Welcome Guest - Sign Up today
Welcome Guest - Sign Up today

Announcement

Collapse

Help Tip: If you have a question that has not been answered to your satisfaction in the archives, it is always best to start a new thread of your own. By starting your own thread, you will receive the maximum number of views by forum members.

Please note this topic has been inactive for 90 days. For the best results, please start a new topic.

Thank you all in advance for doing your part in helping iboats run a smooth ship.

Additional forum rules linked below.
http://forums.iboats.com/forum-rules-guidelines-405/
See more
See less

Crusader 454 rattling noise in gear

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Crusader 454 rattling noise in gear

    Trying to figure out where the rattling noise comes from when I put to Crusader 454 in gear forward or reverse, rattles like a nut is flopping around. Nothing in neutral I've searched a couple of links for suggestions. I disconnected the coupler and she still makes the noise when put in gear. I've checked the spark plugs they all look good and normal. I've tried pulling spark plug wires seems like they're all firing. The oil is clean. One thing I found was what appears to be exhaust floating on the coolant in the heat exchange. Could this mean a leak somewhere and causing the knocking. Trying to avoid pulling the gear and checking the damper plate. Any input or suggestions would be appreciated.

  • #2
    Don't know for sure but have you looked in the exhaust to see if the are water shutters? If so they were made of metal and had rubber coating around the edge.

    what appears to be exhaust floating
    In most cases this is just sediment, but would have to see what your seeing. Has the coolant ever been changed?
    94 Formula 27PC Custom 509MPI MEFI3 , B3 XR
    95 Rinker 232 w/ 7.4L Carb 0F425011 B1 0F486471
    07 SeaDoo GTX
    Raw Water Pump Maintenance
    Merc Adults Only
    G-Dad always said "First Liar doesn't stand a chance"

    Comment


    • #3
      If it is not the water shutters then it is probably the springs in the drive coupler, Over a period of time they compress from the drive load and loosen up.
      Kenner, Louisiana 1980 Donzi 18'. 2+3 6.2 MPI Alpha 1

      Comment


      • #4
        Thanks for the imput... I have fresh coolant cause I replaced exaust elbows. hanen't really put any time on engine since then. probally is old sediment. I'm still thinking a spring in damper plate. other links say make sure all plugs are firing. anyone know of a better way of checking if plugs are firing

        Comment


        • #5
          The good thing about some transmissions, is they let you know if the motor is not firing on all cylinders the same. The velvet drive trans will rattle in neutral if this is happening, but yours is doing it only in gear so this may be something else. To check your plugs, just pull the plugs one at a time to see if there is a change.

          Your prop shaft may not be aligned to within .003 and the bolts may be loose. Which transmission do you have and is it direct or V drive?
          94 Formula 27PC Custom 509MPI MEFI3 , B3 XR
          95 Rinker 232 w/ 7.4L Carb 0F425011 B1 0F486471
          07 SeaDoo GTX
          Raw Water Pump Maintenance
          Merc Adults Only
          G-Dad always said "First Liar doesn't stand a chance"

          Comment


          • #6
            Sign up today
            If you do check the shaft alinment be sure to do it with the boat in the water if it is on a trailer.
            Kenner, Louisiana 1980 Donzi 18'. 2+3 6.2 MPI Alpha 1

            Comment

            Working...
            X