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I Have Water in My Fuel

Your are not alone. Water in the fuel is a very common occurrence. Most boat owners will experience water in the fuel.

Water in your fuel can prevent the engine from running correctly or it can stop the engine all together. It is not uncommon to find a little blob of water in the bottom of your Water Fuel Separator when performing your scheduled maintenance. The problems arise when you get too much water and it passes through the filters into the engines fuel system.

Once water has passed into the engines carburetor or fuel injection system it will stay there until it is physically removed by you or a technician.

Water in the engines fuel system will often cause hard starting, low power, backfiring, surging or stalling.

A few items need to be addressed when servicing a boat with water in the engines fuel system.
1. The carb or injectors will have to be removed and cleaned and/or rebuilt.
2. All the fuel lines, fuel pumps and VST or fuel injection components must be properly flushed and cleaned.
3. All the fuel filters must be serviced.
4. Review the Water Fuel Separator and install one if not present.
5. Remove all water from the boats fuel tank and inspect the tank for possible areas for water to leak in.
6. Inspect the fuel fill assembly and the fuel vent fittings and hoses.
7. Change gas stations if you suspect the station as the water source.
8. Do not use or depend on "Dry Gas" to remove the water from your fuel system.
9. Address the problem right away. Water sitting in your engine will cause much more damage.

Fuel containing Ethanol should be avoided at all cost.
Ethanol can ruin fuel lines, fuel senders and other fuel system components.
It can also increase the amount of moisture getting into your fuel tank.
With time, Ethanol containing fuels can cause Phase Seperation.
This causes a layer of water and pure Ethanol to layer out into the bottom of your fuel tank.
This layer can cause damage to electric fuel pumps and other fuel system components.

Try to use a good non-ethanol fuel such a Rec90.

Boats can explode. Moving parts can rip off your fingers. Hot exhaust can burn you to the bone and props can slice you up. One spark near a battery can cause an explosion. You can never be too careful. Remove the battery from the boat before working with fuel. Always disconnect the batteries negative terminal first. Clean up any spilt fuel and let ALL of the fumes dissipate before installing the battery and starting the motor. Pulleys and Belts can grab your clothes and hair. Don't wear loose clothing and keep your hair up under a hat. Always wear safety glasses. Be smart.
Change your Alpha Gear Lube
Change your Bravo Gear Lube
Why does my drive lube have white streaks?
Why does my drive lube have gray mush?
Replace Your Alpha One Water Pump
Replace your Alpha Gen II Water Pump
Rebuild your Bravo Raw Water Pump

Troubleshoot & Replace your Alpha Shift Cable
Troubleshoot & Replace your Bravo Shift Cable

Replace your Alpha One Bellows & Gimbal Bearing
Replace your Alpha Gen II Bellows & Gimbal bearing
Replace your Bravo Bellows & Gimbal Bearing
Why does my drive "Growl" when I turn?
Water is leaking into my boat from the transom

Replacing your Trim Sender Switches
My Trim doesn't work but my Trailer Switch does
My Trim Gauge is Pegged

Rebuild your Alpha One Upper Driveshaft Housing Assembly
Rebuild your Alpha One Lower Gear Housing Assembly

Check your Engine Alignment
Check for Excessive Steering Play
Troubleshoot an Overheating Problem
Should I remove my thermostat?
Why do I overheat when going fast?
Troubleshoot a No-Crank Condition
Troubleshoot a No-Start Condition
My Engine Backfires and/or Surges and has Lack of Power
What is an Anti-Syphon Valve?
My Engine blows Steam from the Exhaust
Why do I hear a "clakity" sound while at idle?
Exhaust Manifolds...IMPORTANT Information
How do I Winterize my engine?

What is Galvanic Corrosion?
I have a Bravo III Galvanic Corrosion Problem
What is a Mercathode?
All about Zinc Anodes
How do I check my carburetor?
What carburetor do I have? A Rochester or a Mercarb?
I have water in my fuel
My fuel smells like varnish
My fuel is old
My engine has been sitting for several months without being run.

I have a Mercruiser 470, 485, 488, 190, 3.7L Engine
I have coolant dripping from the front of my engine
Can I install a regular Alternator instead of the Stator-Rotor?

Converting an OMC to a Mercruiser

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