Andy surveying outboard motor

Computer diagnostics for outboard engines

(and why it’s important to hire a marine surveyor who can perform them)

Marine Engine Diagnostics is a method of analyzing an engine by connecting the engine’s Electronic Control Module (ECM) to a computer system. The connection is done using an adapter that is unique to the engine. Communication between the ECM and the diagnostics software offers valuable information about the engine.

Andy Lowe Marine Surveyor can connect to the ECM to collect such information as the actual engine hours, RPM runs history, current engine fault codes, historic fault codes and to simply understand how an engine has been used in its life. This information helps boat buyers make an informed decision. Has the engine recently been overheated? Has it been run at high RPM for most of the hours or low RPM while trolling?

downloading outboard motor diagnostics

We can perform detailed engine computer diagnostics of outboard engines on Yamaha, Suzuki, Honda, Evinrude/Johnson, and Mercury motors as well as Mercruiser inboard engines and most PWC’s. A full list of the models we can connect to is listed below. While we still perform all of the standard outboard checks performed by all marine surveyors such as inspecting the transom, mounting, startup, performance, corrosion checks, etc. we can also provide you with all of the data available in the engine’s computer to help you feel confident in your purchase.

Models we can perform outboard engine diagnostics on:

2003 – Present Outboards, Sport Boats, and Waverunners, all EFI models
2003 – 2005 Mercury badged Yamaha engines, 75-225 HP

1998 – Present DF40 to DF300 Outboards

2002 – 2012 All Ficht/ETEC engine model
2012 and up G2

Mercury Marine/Mercruiser
2004 – Present Verado 4-Stroke Outboards, all models
1998 – Present Optimax/DFI 2-Stroke Outboards, all models
2002 – Present 25 to 125 HP 4 Stroke EFI Outboards, Including 25/30 HP Tohatsu-built models *
2012 – Present 150 HP 4-stroke EFI (G3) Outboards
2010 – Present 30 to 60 HP 4 Stroke EFI (G3) Outboards
2014 – Present 75 to 115 HP 4-Stroke EFI (G3) Outboards
1994 – 2005 150 to 225 HP 2-Stroke EFI Outboards
1995 – 2001 225/250 HP 2-Stroke EFI 3.0L Outboards
1995 – 1999 225 HP 2-Stroke Carb 3.0L Outboards
1998 – 2006 25 to 60 HP 4-Stroke Carb Outboards
1992 – 2001 Mercruiser MEFI 1-4 Sterndrives
2002 – Present Mercruiser EFI Sterndrives
2008 – Present Mercruiser EFI Sterndrives with ECT (G3)
2000 – 2004 Sea Doo boats with 240 EFI M-2 Jet Drive
2004 – 2005 Sea Doo boats with 250 Optimax M-2 Jet Drive
1992 – 2002 Generic MEFI 1 to 4 systems (like certain Volvo Penta, Crusader, Indmar engines used in boat brands like Mastercraft, Malibu, Sea Ray, etc)

2004 – Present BF40 to BF250 Outboards
2004-2009 Aquatrax PWC

This list is not complete, there are other years/models as well. Please contact us to confirm your survey/inspection today.

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