Jump to content

Welcome to TheMalibuCrew!

As a guest, you are welcome to poke around and view the majority of the content that we have to offer, but in order to post, search, contact members, and get full use out of the website you will need to Register for an Account. It's free and it's easy, so don't hesitate to join the TheMalibuCrew Family today!

Service Warning alarm SPN: 65597 FMI:7 system not responding properly


Recommended Posts

Have been getting this service warning: Service Warning  with an active engine fault code of SPN: 65597 FMI:7 system not responding properly. Know it has something to do with cylinder 7 misfire but can’t diagnose problem. Changed spark plugs, swapped wires to different cylinder, swapped direct to cylinder ignition distributor modules. Boat has Monsoon 409 6.0 l engine which has direct cylinder ignition modules. Still coming up with same active engine fault so can’t be plugs wires or ignition module then because code didn’t switch after I swapped parts. Boat runs smooth with no load but with a load on engine can’t get above 9.5 mph with full ballast at full throttle. Anybody have any recommendations I am out of ideas. Thank you.

Link to comment

Thanks Going to try swapping injectors tonight to see if the error code changes to that cylinder. Gas is always fresh and new from good supply. 

Link to comment
  • 1 year later...

Did you ever figure out your issue? I have same thing going on with mine right now 

Link to comment

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...