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

How to Extend the Life of Your Caterpillar 3512 Marine Engine

January 31, 2025

Long-Term Care Strategies for Getting the Most Out of Your Engine


1. Prioritize Cooling System Maintenance


Signs of a Failing Raw Water Pump


Raw Water Pump Maintenance Tips


2. Perform Regular Oil & Filter Changes


Best Practices for Oil & Filter Changes


3. Keep the Fuel System Clean for Maximum Efficiency


4. Inspect & Maintain the Turbocharger


Turbocharger Maintenance Tips


5. Monitor Cylinder Heads & Perform Routine Overhauls


Signs That a Rebuild is Necessary


Benefits of Using a Caterpillar 3512 Rebuild Kit


6. Follow a Strict Preventive Maintenance Schedule


Essential Maintenance Schedule for the Caterpillar 3512


Final Thoughts: Maximize Engine Life with Proper Cooling & Maintenance


Key Takeaways


Looking for a Raw Water Pump or Rebuild Kit for Your Caterpillar 3512?


Parts Catalog for Caterpillar 3512 Marine Engine


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How to Improve Fuel Efficiency in Your Caterpillar 3512 Marine Engine

January 31, 2025

Practical steps to optimize fuel usage without sacrificing performance


1. Optimize the Fuel System for Maximum Efficiency


Key Fuel System Maintenance Steps:


2. Maintain the Turbocharger for Better Airflow & Combustion


Turbocharger Maintenance Tips


3. Keep the Aftercooler Clean to Prevent Overheating


Aftercooler Maintenance Tips:


4. Reduce Engine Idling & Optimize Load Management


How to Reduce Fuel Waste from Idling:


5. Maintain the Cooling System to Avoid Overheating & Inefficiency


Cooling System Maintenance Tips:


6. Use High-Quality Aftermarket Parts for Cost-Effective Maintenance


Essential Aftermarket Parts for Fuel Efficiency:


Final Thoughts: Maximizing Fuel Efficiency in the Caterpillar 3512


Key Takeaways:


Looking for Fuel System & Performance Parts for Your 3512?


Parts Catalog for Caterpillar 3512 Marine Engine


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Key Maintenance Tips to Keep Your Caterpillar 3512 Running Strong

January 31, 2025

1. Perform Regular Oil Changes


Why It’s Important:


Oil Change Best Practices:


2. Inspect and Maintain the Cooling System


Why It’s Important:


Cooling System Maintenance Checklist:


3. Keep the Fuel System Clean


Why It’s Important:


Fuel System Maintenance Steps:


4. Inspect & Maintain the Turbocharger


Why It’s Important:


Turbocharger Maintenance Tips:


5. Monitor the Cylinder Head & Valve System


Why It’s Important:


Cylinder Head & Valve Maintenance Steps:


6. Maintain the Aftercooler System


Why It’s Important:


Aftercooler Maintenance Tips:


7. Check and Replace Worn Belts & Hoses


Why It’s Important:


Preventive Maintenance for Belts & Hoses:


8. Keep Exhaust & Emissions System Clean


Why It’s Important:


Exhaust System Maintenance Checklist:


Final Thoughts: Keep Your Caterpillar 3512 Running Strong


Key Takeaways:


Need Aftermarket Parts for Your 3512?


Parts Catalog for Caterpillar 3512 Marine Engine


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