Diesel Algae Contamination
Diesel algae contamination is one of the most common causes of sudden filter plugging, low RPM, surging, and hard starting in marine diesel engines—especially around Ventura, Oxnard, Channel Islands Harbor, and Santa Barbara, where condensation and storage cycles feed microbial growth. If you’re not sure where to start, jump into the diagnostic hub first: Master […]
Signs Your Marine Diesel Engine Is Beyond Rebuild
Marine diesel engines are known for longevity, but every engine eventually reaches a point where rebuilding may no longer be the smartest investment. Knowing when an engine has crossed that line can save thousands of dollars, reduce downtime, and improve long-term reliability. If you are unsure whether your symptoms indicate repairable problems or end-of-life failure, […]
Repower vs Rebuild Marine Diesel Engine
Rebuild vs Repower Marine Diesel: Which Is the Smarter Long-Term Decision? At some point, every boat owner faces the big question: Should I rebuild my marine diesel engine or repower with a new one? The right answer depends on engine condition, operating hours, budget, and long-term goals. Before making a major investment decision, start by […]
Racor filter troubleshooting guide
Racor Filter Troubleshooting Guide — Marine Diesel Fuel/Water Separator Diagnosis Quick Technical Diagnosis Summary: Most Racor-related problems are either fuel restriction (clogged element, collapsed pickup/hoses, vacuum leaks) or water/contamination (water in fuel, algae/sludge). The fastest field indicator is loss of RPM under load, hard starting, or recurring “change filter” alerts shortly after service. This guide […]
Marine Engine Heat exchanger clogging symptoms
Heat Exchanger Clogging Symptoms — Marine Diesel Diagnosis Guide Quick Technical Diagnosis Summary: A clogged marine diesel heat exchanger reduces cooling capacity by restricting raw water flow through the tube bundle. Early signs include rising temperatures under load, intermittent overheating, weak exhaust water discharge, and temperature spikes after impeller failure. Heat exchanger clogging is often […]
Marine Engine Raw water flow problems
Marine Engine Raw Water Flow Problems — Troubleshooting & Diagnosis Guide Quick Technical Diagnosis Summary: Raw water flow problems are most often caused by intake restrictions, air leaks on the suction side, damaged pump impellers, collapsed hoses, or internal blockages in the strainer/heat exchanger circuit. The fastest diagnostic clue is whether exhaust discharge water volume […]
Racor Fuel Filtration Monitoring Upgrades
Racor Vacuum Gauges, Water Detection & Duplex Filtration: The Fuel-System Upgrades That Prevent Diesel Breakdowns If you run a diesel boat out of Ventura, Oxnard, Channel Islands Harbor, or Santa Barbara, your fuel system is always working against the real-world stuff: condensation in tanks, questionable marina fuel, algae growth, rust, sludge, and long sits […]
Yanmar Diesel Refresh With Transmission Rebuild
Borg Warner Velvet Drive transmission before rebuild on Yanmar 3JH4E marine diesel engine Ventura Harbor Keeping a Yanmar 3JH4E running strong in the Santa Barbara, Ventura, and Channel Islands region means staying ahead of critical maintenance—especially when dealing with aging marine transmissions and rear main seals. In this project, we restored a well-used Yanmar 3JH4E […]
Caterpillar Marine Diesel Engine Services
Caterpillar C12 marine diesel engine services by 805 Marine Diesel Mechanic — mobile, veteran-owned support for boaters in Ventura, Oxnard, Channel Islands Harbor, and Santa Barbara. Cat C12 Certified Care | 805 Marine Diesel Mechanic keeps your Caterpillar C12 running clean, cool, and efficient. From commercial workboats to sportfishing and cruising yachts, we provide factory-spec […]
Scania Marine Services
Scania Marine Diesel Engine Services, provided by 805 Marine Diesel Mechanic — trained technicians delivering factory-level maintenance, diagnostics, fuel system upgrades, overhaul & mobile dockside service in Ventura, Oxnard, Channel Islands Harbor & Santa Barbara. Scania marine diesel engines, including high-performance platforms like the DI13, are built for operators who demand fast response, strong torque, […]