Engine Computer Diagnostics

Contact Us

Is your engine hard to start?

Does it quit or misfire?

Are you experiencing poor engine performance?

Or perhaps your engine doesn't start at all!!!

Fuel injection problems can be a bear to figure out. Is it a faulty sensor or perhaps a malfunctioning injector? Or maybe something else? The possibilities go on and on. What's a boater to do?

  • Mechanic inspecting a truck engine with a laptop, outdoors.

NOT TO WORRY. Harbor Marine has the answer.


Diacom diagnostic software, more commonly known as DIACOM MARINE, is a powerful diagnostic tool that has revolutionized marine engine service. We can come to your vessel and diagnose your EFI problems in a short time. No guesswork!


And we cover nearly every marine engine available, including:


  • GM Ramjet
  • Turnkey
  • Pleasurecraft
  • Marine Power
  • Panther
  • Kodiak
  • Indmar
  • Ilmore
  • Flagship
  • Mercury Outboard
  • MerCruiser
  • Mercury Racing Sterndrives
  • Volvo
  • Crusader


So give us a call at (847) 731-8218 so we can give you the help you need.