5 Blackjack Boat Problems With Solutions

You must be here because you are facing blackjack boat problems. Don’t panic, you are not alone. I can help you with the techniques to solve this issue.

In this article, I will address some common problems that users may face while operating this engine and provide practical solutions to help resolve these issues.

Blackjack Boat Problems and Solution: Quick Review

Before we jump into the elaborate description of Blackjack boat problems and possible solutions, let’s check an instant overview.

U-joint on the Flex Shaft BreaksRegular Maintenance: Grease and inspect U-joint regularly.
Low FreeboardProper Weight Distribution: Balance weight within the boat.
Not Responding to ThrottleThrottle Inspection: Check for obstructions in throttle linkage.
Engine Will Not StartFuel Quality Check: Ensure clean, fresh fuel is used.
Cooling System Inspection: Check the water pump and impeller.Throttle Inspection: Check for obstructions in the throttle linkage.

I recently covered Issues with Simrad GO9 XSE and solutions. You can visit it as well.

Problem 1: U-joint on the Flex Shaft Breaks

The U-joint on the flex shaft is a critical component that facilitates the transfer of power from the engine to the propeller. When this U-joint breaks, it can lead to a loss of propulsion and potentially leave you stranded on the water.


  • Unusual noises coming from the drivetrain.
  • Vibration or excessive shaking of the boat.
  • Difficulty in steering or controlling the boat’s direction.


  • Lack of regular maintenance leads to corrosion and wear.
  • Excessive use or aggressive maneuvering causes stress on the U-joint.
  • Water infiltration leads to rust and deterioration.


  • Regular Maintenance: Grease the U-joint and inspect it regularly for signs of wear or corrosion.
  • Smooth Maneuvering: Avoid abrupt and aggressive maneuvers to reduce stress on the U-joint.
  • Prevent Water Infiltration: Ensure proper sealing and protective measures to prevent water from reaching the U-joint.

Problem 2: Low Freeboard

Low freeboard refers to the distance between the waterline and the lowest point of the boat’s hull. When the freeboard is too low, it can result in water entering the boat, leading to instability and safety concerns.


  • Water enters the boat, especially in rough waters.
  • Reduced stability and increased rocking motion.
  • Risk of swamping in severe conditions.


  • Overloading the boat with passengers or cargo.
  • Improper weight distribution affects the balance of the boat.
  • Wear and tear on the hull or improper hull design.


  • Weight Distribution: Properly distribute weight within the boat to maintain a balanced and stable posture.
  • Load Capacity: Adhere to the manufacturer’s recommended load capacity and avoid overloading.
  • Hull Maintenance: Regularly inspect and maintain the hull to prevent leaks and damage.

Problem 3: Not Responding to Throttle

When the engine does not respond to throttle inputs, it can hinder your ability to control the boat’s speed and maneuverability.


  • Lack of acceleration or deceleration response.
  • Inconsistent power delivery.
  • Unpredictable engine behavior.


  • Throttle linkage issues.
  • Fuel delivery problems.
  • Electrical connection faults.


  • Throttle Inspection: Check for any obstructions or misalignments in the throttle linkage and ensure smooth movement.
  • Fuel System Check: Inspect the fuel lines, filters, and injectors for blockages or clogs. Ensure proper fuel quality and avoid water contamination.
  • Electrical Connections: Examine and secure all electrical connections related to the throttle system to ensure proper communication.

Problem 4: The Engine Will Not Start

A non-starting engine can be frustrating and may prevent you from enjoying your time on the water.


  • The engine cranks but doesn’t start.
  • No response when turning the ignition key.
  • Intermittent starting issues.


  • Fuel system problems.
  • Ignition system failures.
  • Battery issues.


  • Fuel Quality: Ensure you are using clean, fresh fuel of the recommended type. Check for water contamination.
  • Ignition Check: Inspect spark plugs, ignition coils, and wiring for damage. Replace any faulty components.
  • Battery Maintenance: Check the battery charge and connections. Charge or replace the battery if necessary.

Problem 5: The engine Starts but Dies After a Few Minutes

If your engine starts but then stalls shortly after, it can be a sign of underlying issues.


  • The engine starts and idles briefly before shutting down.
  • Poor performance during the short run time.
  • Possible smoke or unusual noises during startup.


  • Fuel delivery problems.
  • Overheating issues.
  • Air intake obstructions.


  • Fuel System Inspection: Check for clogged fuel lines, filters, or injectors. Ensure proper fuel flow to the engine.
  • Cooling System: Inspect the water pump, thermostat, and impeller for proper functioning. Overheating can lead to engine shutdown.
  • Air Intake Check: Ensure the air intake is clear of debris or blockages that could disrupt proper airflow.

Can you spare 5 more minutes? You can check out, complications with Falcon Boats, too.

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