Boat Sat Too Long and Won’t Run Right
Boat sat for months or years and now won’t start or runs poorly? Here’s what happens to an engine that sits and how we bring it back.
Ethan, the owner and mechanic, answers the phone · Open 7 days a week
- Same / next day availability
- On-site & marina service
About This Problem
Boats don’t like to sit. Fuel goes stale, injectors clog, impellers take a set, and batteries die. The good news is that many engines that have sat for years can be brought back with the right work.
Boat been sitting and won’t run right? Call Ethan and tell him how long it’s been. He’ll know where to start.
Call 786-351-5363Most Common Causes
These are the causes we find most often.
Stale fuel
Old fuel varnishes and clogs filters, pumps, and injectors.
Clogged injectors
Injectors gum up after long storage.
Impellers
Impellers stiffen and crack after sitting.
Dead batteries
Batteries sulfate when left discharged.
Corrosion
Salt and moisture corrode connections and moving parts.
What We’ve Found on Real Jobs
From Ethan’s job log across South Florida.
Sat for 13 years
Cleaned injectors, fuel pumps, spark plugs, cap and rotor on an engine that had sat for 13 years.
Back after a few years
Back running after sitting for a few years.
Sat since 2020
A Mercury 75 that had sat since 2020 was serviced and ready for the water.
Fresh start-up
A fresh start-up after sitting for a year.
What You Can Check Before You Call
- How long it sat and whether the fuel was stabilized
- Battery condition
- Whether it was flushed before storage
When to Call
Don’t just try to start it. Call and we’ll service the fuel, cooling, and ignition first so you don’t damage anything.
No call center. No front desk.
When You Call, the Owner Picks Up
Every call goes straight to Ethan, the owner of EG Marine Services and the mechanic who does the work. There’s no receptionist taking a message and no waiting on a callback from someone who’s never seen your boat.
Tell him what’s going on: the alarm on the display, the noise at idle, the engine that won’t turn over. Ethan knows Yamaha, Suzuki, Mercury, and the rest of what runs in South Florida inside and out, so you’ll usually get a straight answer on the first call, whether that’s something you can check yourself or a visit to your dock.
- Straight answers, not a script
- Diagnostic questions answered on the phone
- Honest advice, even when the fix is simple
- The person you talk to is the one who shows up
Ethan
Marine mechanic
Describe what the boat is doing and get a real answer from the mechanic, not a message taker.
Call Ethan: 786-351-5363Open 7 days a week
How We Fix It
Boat Fuel System Repair
Water in fuel, clogged injectors and filters, VST service, and fuel pump replacement.
Learn moreBoat Starts Then Dies
Runs a few seconds or minutes, then stalls: almost always fuel, vents, or idle control.
Learn moreOutboard Loses Power at High RPM
Fine at idle, bogs or shuts down at speed: VST filters, injectors, pumps, and pickups.
Learn moreWater in Boat Fuel
How water gets in, how to spot it, and what it takes to clean the system out.
Learn moreGet a Boat Fuel System Repair Scheduled
Call Ethan directly786-351-5363Open 7 days a week · No call center or front desk, you talk to the person doing the work
Prefer a free quote?
Leave your number and we’ll call you back.
Frequently Asked Questions
I have old gas in my boat. What should I do?
Don’t run it. Gas older than a few months, especially ethanol blends, can gum up injectors and carburetors and absorb water. We pump out stale fuel, dispose of it properly, replace filters, and check the fuel system.
Can old fuel damage my engine?
It can clog injectors and pumps. We drain or treat old fuel before running the engine.
Should I replace the impeller after storage?
Yes, if it’s been a year or more.
How do I store my boat to avoid this?
Keep the tank full with stabilizer, flush the engine, and keep the batteries charged.