Hey Gang,

My boat is having running issues, it's blowing black smoke, loosing power and shutting off.
Brought it to my local boat dealer and they aren't familiar with the Indmar engine so told me I'm best to g to a GM mechanic to take a look.
He did however tell me that it's getting way to much fuel and that is part of the issue with how it's running.
When I called Indmar they said it does have a MEFI4 diagnostic port.
Is there a tool I can pickup off Ebay that would help diagnose the issue?
Is this a tool that a GM dealer would have?

Thanks for any help