Mercury power runs deep in Southwest Florida: FourStrokes on the bay boats, Verados on the offshore rigs, Pro XS on the tournament fleet and MerCruiser sterndrives in half the canal cruisers. We service and repair all of it, mobile, at your dock or lift across Fort Myers, Cape Coral, Naples and SWFL, with factory-level CDS G3 diagnostics aboard and one specialty almost nobody else offers: Mercury ECU and ECM service.
Supercharged straight-six and the newer V8 and V12 generations: drive belt service, supercharger attention, the electro-hydraulic steering these engines pioneered and the electronics-dense systems that reward proper diagnostic equipment. Verados are magnificent and unforgiving of improvisation, and we do not improvise.
From portable kickers to the 300hp V8s, the workhorse line of SWFL's fleet: 100-hour and annual services, water pump and thermostat work, fuel system service and the corrosion management Gulf Coast duty demands.
The tournament side of the badge: performance-focused service that respects what these engines are asked to do, from fuel systems tuned for hole shot to lower unit care for boats that run skinny water at speed.
The other half of Mercury's SWFL presence. MerCruiser repair is standing work for us: engine service, exhaust riser and manifold replacement on raw-water-cooled blocks, Alpha and Bravo drive service, bellows, gimbals and shift cables. Canal-kept MerCruisers live hard lives here, and their risers in particular deserve more suspicion than most owners give them.
Here is a problem Mercury owners across Florida know too well: the engine control module fails, the dealer quotes a replacement price that buckles knees, and the internet offers a maze of mail-away services with your boat down for weeks either way. The ECU is the engine's brain, and when it goes, everything goes: no-starts, phantom alarms, dead gauges, engines stuck in guardian mode for reasons no sensor can explain.
We built a genuine answer for Mercury ECU repair in Florida. Our process starts with proper diagnosis, because a large share of suspected ECM failures are actually wiring, ground or sensor problems wearing the module's costume, and condemning a healthy computer is an expensive mistake we refuse to make. We connect CDS G3 directly, test the circuits around the module and prove the ECU is truly the fault before anything else happens.
When the module is genuinely gone, we manage the full path: Mercury ECU replacement with correct programming for your engine's specifics, coordination of module repair services where repair beats replacement economically, and complete reinstallation, relearn procedures and sea-trial verification. Owners contact us from well beyond Lee County for this work because so few shops in Florida handle Mercury ECM service methodically. If your Mercury is throwing electronic ghosts anywhere in Southwest Florida, this is the page you were looking for.
Every brand has its Florida patterns, and Mercury's are well mapped after fifteen-plus years of local wrenching. Verado supercharger belts age on heat and hours. FourStroke fuel systems gum predictably on ethanol and idle time, with the high-pressure rail screens catching what the filters miss. VesselView and gauge connections corrode into false alarms that send owners chasing healthy components. MerCruiser risers scale shut invisibly. And across every line, the salt finds connectors first, which is why our diagnostics test circuits before condemning parts. Pattern knowledge is not a substitute for diagnosis, but it makes the diagnosis faster, and faster diagnosis is cheaper repair.
Island Marine Repair is a fully mobile marine service company based in Fort Myers, led by Cody, our certified marine technician with 15+ years across SWFL's water. Mercury earns dedicated depth here because the brand's local fleet spans everything from twelve-foot jons to fifty-foot centers, and because its electronic architecture rewards exactly the diagnostic-first discipline we built the company on. The CDS G3 system travels on our truck, the failure patterns live in our heads and the work happens at your dock. Our story is on our About Us page.
Mercury work rarely travels alone, and neither does our truck. Everything below performed mobile across SWFL:
MerCruiser's inboard cousins and every other badge: complete engine room service and repair performed in the slip, gas and diesel, no haul-out.
The full outboard practice behind this brand page: Suzuki, Yamaha and Mercury motors serviced on factory intervals at your dock or driveway.
The discipline this whole page runs on: factory scan tools connected dockside, fault codes and engine history read before repairs get discussed.
Mercury lower units and every other gearbox: pressure tested, resealed and rebuilt with the drained lube read like the health report it is.
The quiet propulsion on Mercury-powered fishing boats: installed with correctly sized circuits and repaired dockside, calibration included.
Transom cracks around outboard brackets and every other glass injury: rebuilt to sound laminate, finished with color-matched gelcoat.
Cowling to waterline: wash, machine wax and oxidation recovery with a technician's inspection included on every visit.
VesselView additions, electronics and fishing systems integrated cleanly with Mercury's SmartCraft architecture and wired to marine standard.
Seats, leaning posts and canvas rebuilt with UV-rated materials, keeping the comfort side worthy of the horsepower behind it.
The rigs hauling Mercury power to the ramp: bearings, brakes, lights and bunks serviced at home or storage before towing day.
Mercury-specific layup to factory procedure: fuel stabilized, systems fogged and batteries managed before the sitting season starts.
The post-storage shakedown with a supervised first start, because a stored Mercury deserves proof before the season leans on it.
Livewells on the tournament fleet serviced dockside: pumps, plumbing and aeration flow-matched to bait and duty.
The pump protecting the whole investment: tested end to end, replaced on evidence, high-water alarms available for slip-kept boats.
SmartCraft electronics need clean power: corroded harnesses rebuilt with tinned wire, labeled circuits and honest fusing throughout.
Mercury rail screens and injectors cleaned and flow-verified, curing the rough idle that ethanol and idle time reliably build.
Mercury outboard cooling system repair is weekly work here: water pumps on schedule, poppets and thermostats tested, flow proven under load.
Mercury-powered boats watched while owners travel: monthly run-ups, system checks and photo reports from the technician who knows the engine.
The easy Mercury jobs have plenty of takers. The reviews we value most come from the hard ones: the ECU mystery two shops misdiagnosed, the Verado alarm nobody could clear, the MerCruiser that overheated only under load. Methodical beats fast guessing every time, and our customers write about exactly that.
ECU diagnoses that saved four-figure replacements, Verado belt services, MerCruiser riser jobs on canal cruisers. Documented below.
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…
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MerCruiser country and FourStroke country at once: the Cape's canal fleet gets riser inspections, drive service and outboard maintenance at private lifts across the whole grid.
Mercury service across the river weekly, from corridor bass boats to Marinatown cruisers, with river-water cooling wear watched closely on every visit.
Verado-heavy offshore rigs get factory-level diagnostics and pre-season multi-engine services, documented for owners who run far and expect proof.
Charlotte Harbor's Mercury fleet serviced in the slip, with the harbor's cruisers bringing steady MerCruiser and outboard work both.
Island Mercury calls handled dockside, from FourStroke services to the ECU diagnostics that would otherwise mean a mainland ordeal.
Full Mercury dispatch to the outer islands, CDS G3 aboard, because electronic problems do not respect geography.
Matlacha's Pro XS and FourStroke fleet serviced between tides: hard-fished Mercurys kept on interval right at the dock.
Mercury service for the bay-access communities, gate handled once, engine history documented visit after visit.
Pass-running Mercurys along the Imperial River and Bonita canals serviced at their lifts, cooling systems watched hardest.
Lemon Bay's Mercury owners covered on real routes: outboard service, MerCruiser work and ECU diagnostics without the drive to anywhere.
Beyond Mercury
Mercury is one piece of the boat. We're also certified on Suzuki, Yamaha, Volvo Penta, Yanmar, Garmin, Minn Kota, Rhodan, and Power-Pole — one mobile team covering your engine, electronics, and trolling motor, dockside.
We come to you. Call or text now — most appointments available within 24 hours.
