When your engine throws an alarm, loses RPM, or refuses to start, guessing is expensive. Our mobile marine engine diagnostics bring dealership-grade scan tools to your dock anywhere in Ft Myers, FL and across SWFL. We read your ECM's live data and stored fault codes, so the repair starts with an answer instead of a parts-swapping experiment.
Here is how most boat engine problems get "diagnosed" in this town: somebody swaps the spark plugs, charges you for them, and hopes. When that doesn't fix it, they swap the fuel filter. Then maybe a coil. Three visits later you have paid for four parts and still have the original problem.
We run it differently. Every diagnostic visit starts by connecting a manufacturer-specific scan computer (Suzuki SDS, Yamaha YDS, Mercury CDS G3, or the appropriate diesel interface) directly to your engine's control module. Modern marine engines log everything: overheat events, over-rev history, fuel trim corrections, sensor dropouts, low-voltage incidents. That history tells us what actually happened, when, and under what load.
Then we verify the data physically. A stored code points to a circuit, not always a part. A "faulty" sensor reading is just as often a corroded connector or a chafed harness wire, especially on boats living in Gulf salt air. So we test the circuit before condemning the component. The result: you pay to fix what is broken. Nothing else.
Marine ECMs don't speak a universal language. Each manufacturer locks its deepest data behind proprietary software, and a generic OBD reader sees only a fraction of what is stored. That is why we invested in the manufacturer systems themselves.
hours, over-rev events, overheat log
Island Marine Repair was founded on a frustration every SWFL boater knows: the local shops that own the right diagnostic computers make you bring the boat to them, and the mobile guys who come to you often don't own the computers. So problems get "solved" by trial and error at your expense.
We closed that gap. Our service units carry the same brand-specific diagnostic systems the dealership service departments use, for outboards, inboards, and marine diesel, and we bring them to your lift, slip, or driveway. Led by Cody, our certified marine technician, we have spent 15+ years reading what Gulf Coast conditions do to marine engines: salt-corroded sensor grounds, heat-stressed fuel systems, ethanol damage on boats that sit. That local pattern recognition is half the diagnosis before the laptop even boots. Read more about our team and our story on our About Us page.
The reviews tell the story better than we can: boaters across Lee County describe quick answers, honest explanations, and repairs that fix the problem the first time. When a fault could be a cheap connector or an expensive component, you want the mechanic who proves which one before ordering parts. That is the reputation we have built one dockside scan at a time.
From no-start troubleshooting on twin Yamahas in Cape Coral to chasing intermittent shutdowns on a diesel trawler in Punta Gorda, our portfolio documents real diagnostic jobs: the symptom, the scan data, the root cause, and the fix.
Boating in Southwest Florida is a year-round thing. No off-season, no winter layup, no real break. And that means our shop floor and our service…
Southwest Florida boating is incredible—but it also comes with challenges. Saltwater corrosion, shallow sandbars, unexpected mechanical failures, and the difficulty of getting boats to repair…
Some of the most satisfying work we do isn’t dramatic breakdown rescues — it’s the steady, careful maintenance and smart upgrades that keep good boats…
Canal-kept boats here idle in brackish water for months at a stretch, producing a very specific pattern of cooling and sensor faults. We scan and diagnose them at your lift, anywhere across the Cape's four hundred miles of canals, usually within days of your call.
Same-week marine engine service across the river, where lift boats along Hancock Bridge Parkway and the Moody River canals are standing stops on our diagnostic routes. River water writes its own fault patterns, and we have read them for years.
Outboard engine diagnostics for Naples Bay's offshore fleet, where twin and triple installations deserve pre-season multi-engine health checks with full printed reports. When the run home is forty miles, guessing at a fault code is not a strategy.
Charlotte Harbor's cruisers and trawlers get complete diesel and gas diagnostics at Fishermen's Village slips, harbor-side communities and private docks. Electronically managed diesels speak in data, and we bring the interfaces that translate.
Island diagnostics without the causeway haul. We bring factory scan computers directly to your Sanibel dock, so a warning alarm becomes a scheduled visit instead of a towing logistics project that eats a week and a boat trailer.
Full diagnostic dispatch to the outer islands, scan tools and test equipment aboard. Distance is the entire reason mobile service exists, and Captiva runs are part of our normal working week, not a special favor.
From St. James City's canal grid to Bokeelia's working docks, Pine Island boats get dockside engine scans without crossing the Matlacha bridge. The island's shallow, grass-rich water produces cooling faults we can usually name before the laptop finishes booting.
Dockside diagnostics along the Estero River and the bay-access communities, scheduled around your week and the river's tide windows rather than a shop's backlog. Gated communities handled smoothly; add us to the list once and visits run like clockwork.
Engine diagnostics at Imperial River docks and Bonita's gulf-access canals, with the same factory scan tools we run everywhere else. Seasonal owners get findings documented with photos, so decisions can be made from any distance.
Serving Lemon Bay and the Englewood waterfront with mobile engine diagnostics, so Charlotte County boaters get scan-tool answers without the long trailer ride to Sarasota or Fort Myers. Real routes, real scheduling, no distance surcharge.
One dockside visit tells you exactly what is wrong and exactly what it takes to fix it. Most diagnostic appointments are available within days, and often same-day.
