125 Harbor Way

Santa Barbara, CA 93101

(805) 774-0637

24/7 Customer Support

Mon - Fri: 9:00 - 5:30

On call service available

Marine Diesel Cooling System Center

Marine diesel engine cooling system overheating diagnosis guide showing heat exchanger and raw water pump - serviced by 805 Marine Diesel Mechanic with 30 years experience in Ventura California

Marine Diesel Cooling System Center: Complete Overheating Diagnosis Hub Marine diesel cooling system failures are one of the most dangerous and misunderstood problems in the marine environment. Unlike fuel or electrical issues that may cause inconvenience, cooling failures can quickly lead to catastrophic engine damage if not diagnosed correctly. At 805 Marine Diesel Mechanic, serving […]

Cooling System Diagnosis Center

Marine diesel heat exchanger clogged causing overheating at idle vs cruise diagnosis by 805 Marine Diesel Mechanic Ventura Channel Islands Harbor

Marine Diesel Cooling System Diagnosis Center   Cooling system problems are a top cause of marine diesel breakdowns—especially overheating at cruise, rising exhaust temperatures, power loss, and premature turbo or aftercooler damage. This Cooling System Diagnosis Center organizes the step-by-step troubleshooting process used by trained technicians at 805 Marine Diesel Mechanic. Use this page as […]

Diesel Algae Contamination

Diesel algae contamination inside marine diesel fuel system showing microbial growth serviced by 805 Marine Diesel Mechanic Ventura Channel Islands Harbor

Diesel Algae Contamination (Marine Fuel System Diagnosis Guide) Diesel algae contamination is one of the most common causes of fuel system failure in marine diesel engines. It leads to clogged filters, loss of RPM, surging, hard starting, and in severe cases, complete engine shutdown under load. At 805 Marine Diesel Mechanic, microbial contamination is routinely […]

Repower vs Rebuild Marine Diesel Engine

Rebuild vs Repower Marine Diesel: Which Is the Smarter Long-Term Decision?

Rebuild vs Repower Marine Diesel Engine (Which Is the Smarter Long-Term Decision?) Schedule Engine Evaluation Master Marine Diesel Troubleshooting Guide At some point, every boat owner faces the same decision: rebuild the existing marine diesel engine or replace it with a new one. The right answer is never based on guesswork—it starts with accurate diagnosis. […]

Detroit Diesel 671 marine restoration project

Detroit Diesel 671 marine engine fully restored and installed in commercial lobster boat in Santa Barbara serviced by 805 Marine Diesel Mechanic

Detroit Diesel 671 marine restoration and repower project for F/V Polar Star, including engine installation, complete rewiring, fuel system replumbing, engine room preparation, and sea-trial verification for commercial vessel reliability in Santa Barbara, Ventura, Oxnard, and Channel Islands Harbor. Schedule Detroit Diesel 671 Assessment Master Marine Diesel Troubleshooting Guide A Detroit Diesel 671 marine restoration […]

Caterpillar Marine Diesel Engine Specifications

Caterpillar Marine Diesel Engine C-32B

Caterpillar C32B marine diesel engine repair, diagnostics, and maintenance in Ventura, Oxnard, Channel Islands Harbor, and Santa Barbara. Start with the Master Marine Diesel Troubleshooting Guide when a Caterpillar C32B shows overheating, smoke, fuel-system imbalance, hard starting, low boost pressure, excessive fuel burn, vibration, or power loss under load. 805 Marine Diesel Mechanic provides mobile […]

Caterpillar Marine Diesel Engine Services

Caterpillar Marine Diesel Engine C12

Caterpillar C12 marine diesel engine repair, diagnostics, and maintenance in Ventura, Oxnard, Channel Islands Harbor, and Santa Barbara. Start with the Master Marine Diesel Troubleshooting Guide when a Caterpillar C12 shows overheating, injector imbalance, hard starting, excessive smoke, oil contamination, low boost pressure, vibration, or power loss under load. 805 Marine Diesel Mechanic provides mobile […]

FPT Marine Engine Fuel System Up-grade

seapro-marine-filtration

FPT marine diesel fuel-system upgrades, Racor filtration installations, cooling-system support, and mobile dockside diesel service in Ventura, Oxnard, Channel Islands Harbor, and Santa Barbara. Start with the Master Marine Diesel Troubleshooting Guide when an FPT marine diesel develops hard starting, injector faults, smoke, unstable RPM, fuel contamination, overheating, or power loss under load. 805 Marine […]

MAN Marine Engine Fuel System Up-grade

seapro-marine-filtration

MAN marine diesel fuel-system upgrades, offshore filtration systems, cooling-system support, and mobile dockside diesel service in Ventura, Oxnard, Channel Islands Harbor, and Santa Barbara. Start with the Master Marine Diesel Troubleshooting Guide when a MAN marine diesel develops injector faults, smoke, hard starting, unstable RPM, fuel contamination, overheating, or power loss under load. 805 Marine […]

MTU (Rolls Royce) Marine Engine Fuel System Up-grade

Racor Triple Fuel Filter Water Separator - Turbine Series, provided by 805 Marine Mechanic

MTU (Rolls-Royce) marine diesel fuel-system upgrades, Twin Disc drivetrain support, offshore filtration systems, and mobile dockside diesel service in Ventura, Oxnard, Channel Islands Harbor, and Santa Barbara. Start with the Master Marine Diesel Troubleshooting Guide when an MTU marine diesel develops injector faults, unstable RPM, smoke, fuel contamination, transmission loading issues, overheating, or power loss […]