Mercury 50 HP 2 Stroke Problems: 5 Reasons

I am back again for another group of people, Mercury 50 HP 2 Stroke boat user. I’ve heard there are different Mercury 50 HP 2 Stroke Problems. 

In this article, I will discuss five common issues that Mercury 50 HP 2-stroke owners may face, along with their symptoms, reasons, and appropriate solutions.

Mercury 50 HP 2-Stroke Problems: Quick View

Before learning about the common Mercury 50 HP 2-Stroke problems, let’s have a quick review of the problems and their solutions it will you identify the exact problem on the engine you have.

ProblemSolution
Engine Acts as It Runs Out of GasReplace fuel filters regularly to ensure proper fuel flow.
The engine Won’t StartCharge or replace the battery as needed.
The fuel Bulb is Not Pumped Up TightInspect fuel lines and connections for any leaks or damage.
The Outboard is OverheatingCheck and maintain proper coolant levels in the system.
Makes Odd NoisesTighten or repair any loose or damaged engine components.

If you have time and you’re interested, please check a comprehensive guide on Mercury 75 HP 2-Stroke Problems that I covered a few days back.

Problem 1: Engine Acts as It Runs Out of Gas

One of the most frustrating problems with the Mercury 50 HP 2-stroke is when the engine behaves as if it’s running out of gas, even though the fuel tank is adequately filled.

Symptoms

  • The engine sputters or stalls during operation.
  • Loss of power and acceleration.
  • Difficulty maintaining a steady speed.

Reasons

  • Clogged fuel filters obstruct proper fuel flow.
  • Contaminated or old fuel can affect engine performance.
  • Carburetor issues, such as dirty jets or floats, disrupt the fuel mixture.

Solution

  • Replace fuel filters regularly to ensure proper fuel flow.
  • Use clean, fresh fuel and store it properly in a vented container.
  • Clean or rebuild the carburetor to improve the fuel mixture.

Problem 2: The engine Won’t Start

Another common issue with the Mercury 50 HP 2-stroke is when the engine refuses to start, leaving boat owners stranded.

Symptoms

  • The engine cranks but doesn’t ignite.
  • Clicking sound when turning the ignition key.
  • No response from the starter motor.

Reasons

  • Dead or drained battery.
  • Faulty spark plugs or ignition system.
  • Fuel delivery problems.

Solution

  • Charge or replace the battery as needed.
  • Inspect and replace faulty spark plugs and ignition components.
  • Check fuel lines and connections for blockages or leaks.

Problem 3: The fuel Bulb is Not Pumped Up Tight

Sometimes, boat owners may encounter issues with the fuel bulb not getting pumped up tightly, affecting the engine’s fuel supply.

Symptoms

  • Soft or spongy fuel bulb that doesn’t firm up when squeezed.
  • Loss of prime in the fuel system.
  • Engine stalling during operation.

Reasons

  • Air leak in the fuel line or connections.
  • Damaged or deteriorated fuel bulb.
  • Clogged fuel system components.

Solution

  • Inspect fuel lines and connections for any leaks or damage.
  • Replace the fuel bulb if it appears worn or damaged.
  • Clean or replace clogged fuel filters and components.

Problem 4: Outboard is Overheating

Overheating is a critical problem that should be addressed immediately to prevent engine damage.

Symptoms

  • The temperature gauge shows the engine running hot.
  • Steam or smoke coming from the engine.
  • Engine entering a reduced power mode.

Reasons

  • Low coolant levels.
  • Clogged water intake or water pump.
  • Malfunctioning thermostat.

Solution

  • Check and maintain proper coolant levels in the system.
  • Inspect and clean water intakes and the water pump.
  • Replace the thermostat if it’s not functioning correctly.

Problem 5: Makes Odd Noises

Unusual noises coming from the engine can indicate potential issues that require attention.

Symptoms

  • Knocking, clunking, or grinding sounds.
  • Whining or whistling noises.
  • Rattling or vibrating sounds.

Reasons

  • Loose or damaged engine components.
  • Worn-out bearings or belts.
  • Issues with the exhaust system.

Solution

  • Tighten or repair any loose or damaged engine components.
  • Replace worn-out bearings or belts.
  • Inspect and repair the exhaust system as necessary.

Undoubtedly, Mercury 50 HP 2-stroke is a reliable outboard engine, but it can encounter problems like any mechanical system. Once you are well aware of the following issues, you will never have to think a lot about how to fix them.

Well, before we are apart, let me suggest you another topic that I recently covered. It’s on the way to adjust Mercury 75 hp 2 Stroke Carburetor. Happy boating!

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