Overheating in Cummins 6.7L Marine Engines: Causes, Prevention & Solutions

May 9, 2025

1. Marine Applications of the Cummins 6.7L Engine


1. Recreational Yachts and Cruisers

2. Commercial Fishing Vessels

3. Passenger Ferries and Charter Boats

4. Pilot Boats and Patrol Craft

5. Tugboats and Support Vessels

2. Top Causes of Overheating in Marine Cummins 6.7L Engines


1. Restricted Raw Water Flow


2. Clogged or Fouled Heat Exchangers


3. Failing Thermostat


4. Low Coolant or Improper Coolant Mix


5. Raw Water Pump Failure


6. Clogged Keel Cooler (For Vessels Without Heat Exchangers)


7. Faulty Temperature Sensor or ECU Misreading


8. EGR Cooler Failure (in Emissions-Compliant Models)


9. Internal Corrosion from Improper Coolant or Storage


10. Overloading and Continuous High RPM Operation


3. Maintenance Best Practices for Marine Cummins 6.7L Engines


4. Recommended Parts from Diesel Pro Power


Conclusion: Keep Your QSB6.7 Cool and On the Water


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Overheating in Cummins 6.7L Marine Engines: Causes, Prevention & Solutions

Everything You Need To Know About The Caterpillar 3406B

April 16, 2025

Key Takeaways


Applications Of The Caterpillar 3406B


Marine Applications Of The Caterpillar 3406B


Industrial Applications Of The Caterpillar 3406B


Specifications Of The Caterpillar 3406B


Finding Serial Number & Arrangement Number For The Caterpillar 3406B


Power Output Of The Caterpillar 3406B


Weight & Dimensions Of The Caterpillar 3406B


Parts That Are Unique To The Caterpillar 3406B


Why The "B" In The Caterpillar 3406B


Aftermarket Parts By Diesel Pro Power For The Caterpillar 3406B


Engine Overhaul Kits For The Caterpillar 3406B


Freshwater Pump For The Caterpillar 3406B


Marine Water Pump For The Caterpillar 3406B


Cylinder Head For The Caterpillar 3406B


Injectors For The Caterpillar 3406B


Turbo For The Caterpillar 3406B


Aftercooler For The Caterpillar 3406B


Oil Pump For Caterpillar 3406B


Connecting Rods For Caterpillar 3406B


Gaskets For Caterpillar 3406B


Starter/Alternator For Caterpillar 3406B


Filters For Caterpillar 3406B


Transmissions That Hook Up To The Caterpillar 3406B


Marine Transmissions


Industrial Use


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Everything You Need To Know About The Caterpillar 3406B

Cummins Marine Engine Slang: The Ultimate Guide to Nicknames, Parts, and Regional Terms

March 19, 2025

Cummins Marine Engine Models: Official Names vs. Slang Terms (Including Regional & Application-Specific Nicknames)


1. Cummins B Series Marine Engines (4B, 6B, 6BT, 6BTA)


2. Cummins C Series Marine Engines (6C, 6CT, 6CTA 8.3)


3. Cummins K Series Marine Engines (KTA, KTA19, KTA38, KTA50)


4. Cummins Quantum Series (QSB, QSC, QSM, QSK)


Conclusion


Cummins Engine Parts: Official Names vs. Slang Terms


1. Cylinder Head and Block Components


2. Pistons and Connecting Rods


3. Crankshaft and Camshaft Components


4. Valvetrain and Air Intake Components


5. Fuel System Components


6. Cooling System Components


Conclusion


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Understanding Air-to-Fuel Ratio in Detroit Diesel 92 Series Engines

February 25, 2025

What is Air-to-Fuel Ratio (AFR)?


How AFR Works in Diesel Engines


Effects of AFR on Engine Performance


AFR in Detroit Diesel 92 Series Engines


Key Parameters Affecting AFR


Fuel Injector Selection


Boost Pressure from Turbocharger


Blower Drive Ratio


Exhaust Backpressure


Governor and Fuel Modulation


Optimal AFR and Engine Performance in Detroit Diesel 92 Series Engines


Ideal AFR for Diesel Combustion


Effects of Incorrect AFR


Effects of a Rich AFR (Low Air-to-Fuel Ratio)


Symptoms of a Rich AFR:


Common Causes of a Rich AFR:


Effects of a Lean AFR (High Air-to-Fuel Ratio)


Symptoms of a Lean AFR:


Common Causes of a Lean AFR:


Maintenance Tips to Ensure Proper AFR


Air Intake System Maintenance


Fuel System Maintenance


Exhaust System Maintenance


Why Maintaining an Optimal AFR Matters


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Understanding Air-to-Fuel Ratio in Detroit Diesel 92 Series Engines

Conclusion: Ensuring Long-Term Reliability for Cummins 6B, 6BT, 6BTA, 4B, 4BT, and 4BTA Engines

February 14, 2025

Summary of Key Maintenance Tips


1. Regular Oil and Lubrication Maintenance


2. Cooling System Maintenance


3. Fuel System Maintenance


4. Air Intake and Turbocharger Maintenance


 


5. Exhaust System and Emissions Control


6. Cylinder Head and Valve Adjustment


7. Electrical System Maintenance


 


8. Preventive Maintenance for Long-Term Engine Health


Final Thoughts on Ensuring Long-Term Engine Reliability


Key Takeaways for Long-Term Reliability:


Looking Ahead: Keeping Your Cummins Engine in Top Shape


Below are two videos of our customer Imperial Diesel Service, rebuilding a Cummins 6BT [ Part 1 & 2]


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Conclusion: Ensuring Long-Term Reliability for Cummins 6B, 6BT, 6BTA, 4B, 4BT, and 4BTA Engines

Recommended Aftermarket Parts for Cummins 6B, 6BT, 6BTA, 4B, 4BT, and 4BTA Engines

February 14, 2025

High-Quality Aftermarket Parts vs. OEM Parts


1. Advantages of High-Quality Aftermarket Parts


2. When to Choose OEM Parts


Choosing the Best Suppliers for Cummins Engine Components


1. How to Identify a High-Quality Aftermarket Supplier


Commonly Replaced Parts and Their Impact on Performance


1. Cylinder Head and Gaskets


2. Pistons, Rings, and Cylinder Liners


3. Fuel System Components (Injectors, Fuel Pump, Lift Pump)


4. Turbocharger and Air Intake System


5. Exhaust System and Emissions Control


6. Cooling System Components (Radiator, Water Pump, Thermostat)


Final Thoughts


Below are two videos of our customer Imperial Diesel Service, rebuilding a Cummins 6BT [ Part 1 & 2]


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Recommended Aftermarket Parts for Cummins 6B, 6BT, 6BTA, 4B, 4BT, and 4BTA Engines