How do you bleed air out of outboard fuel lines?
How to Bleed a Gasoline Line
- Fill up the gas tank with fuel.
- Start the engine but do not allow air into the system. Have a friend turn the key in the ignition to “Start” for approximately 3 seconds.
- Allocate approximately 20 minutes for the engine to sit if flooding occurs while bleeding the fuel lines.
How does Mercury Optimax fuel system work?
How Does Optimax Fuel System Work? Three fuel pumps provide the high pressure fuel, while a pulse-driven lift pump and two electrical pumps operate in the VST tank. Fuel is cooled by sea water before being delivered to the fuel injectors by rail.
How do you prime a boat fuel system?
When the bulb is firm, the line is charged and you can start the engine. If your Mercury FourStroke outboard is 75hp or greater, the onboard electric fuel pump will prime the fuel system for you. Simply turn the key to the “run” position and wait. You’ll hear a beep, followed by the sound of the fuel pump running.
What happens if you get air in fuel system?
When unwanted air finds its way into your fuel system, your car becomes at risk of reduced performance, and even engine failure. The best way to prevent this from happening is to take your vehicle in for regular maintenance.
What causes a fuel pump not to prime?
Often fuel pump priming issue is due to improper electrical wiring and connections. If the grounding of the fuel pump has gone bad, then there will be no current supply to the fuel pump and it won’t prime.
Does air in fuel lines have symptoms?
Fuel lines that are submerged in air may stall, hiccup, or refuse to start. Air bubbles in fuel lines can cause these symptoms. Keep your fuel lines free of air for maximum performance.
Why do you need to bleed the injection component system?
It is not only used when changing the delivery pump or the fuel filter but also when replacing high pressure pumps or other system components. Bleeding the low pressure side prevents, among other things, defects to the high pressure pump which can occur during filter change without manual bleeding, for example.
How do I clean my OptiMax fuel system?
RE: CLEANING OPTIMAX FUEL INJECTORS I have cleaned injectors and carbs by mixing 1/2 gallon of gas (oil if 2 stroke) and commercial injector cleaner in a clean container. Take your fuel line, drop it in the container, pump up the bulb and start and run at idle until all fuel is gone.
How many times should you squeeze a primer bulb?
Long Term. Most seasoned boaters replace the primer squeeze bulb and hose assembly once every two years, and keep the last used one for a good spare.
What makes Mercury Optimax fuel efficient and powerful?
Mercury states that the atomized fuel droplets are about 10 microns in size. All of these things in combination are what make the Mercury Optimax fuel efficient and powerful. The better the atomization, the more efficiently fuel can burn, thus giving exceptional power and fuel economy.
What are the problems with the Mercury Optimax 225?
Such problems with Mercury Optimax 225 are also common with some other popular brands. Now, let’s talk about those in detail. 1. Idle Start Problem The engine starts fine but quitting after a minute is the nature of this problem.
How does the Optimax fuel system work?
A fuel pressure regulator is installed on the fuel rail to relieve excess pressure, the fuel that is let out by this regulator circulates back into the VST tank. This part of the Optimax operates very similarly to most modern fuel injection systems. But there is more to the Optimax fuel system than that.
When did the Mercury Optimax DFI motor come out?
The Mercury Optimax DFI engine is a 2-stroke direct injected motor made and designed by Mercury Marine. Originally introduced in 1995, the Optimax motor was made and sold until 2018, depending on your location the motors were sold under both the Mercury and Mariner names.