Detroit Diesel Overheating Problems
Detroit Diesel Overheating Diagnosis Center (Detroit Diesel Authority) Overheating is one of the most serious problems a marine diesel engine can experience. Detroit Diesel engines are extremely durable, but excessive temperatures can quickly lead to head gasket failure, piston damage, or complete engine shutdown if the root cause is not diagnosed quickly. This Detroit Diesel […]
Detroit Diesel Low Power / Loss of RPM
Low Power or Loss of RPM Diagnosis Center (Detroit Diesel Authority) When a marine diesel engine suddenly loses power or cannot reach normal operating RPM, it is often a sign of developing mechanical, fuel, or airflow problems. Detroit Diesel engines are legendary for durability, but even these classic engines can experience power loss when fuel […]
Computerized Marine Diesel Engine Survey Diagnosis Center
Schedule a Computerized Engine Survey Computerized Marine Diesel Engine Survey Diagnostics Center When symptoms don’t match the obvious causes (or the problem only shows up under load), computerized diagnostics is how trained technicians remove the guesswork. This page is your hub for fault-code scanning, live data monitoring, sea-trial verification, and evidence-based troubleshooting on marine diesel […]
Electrical & Starting System Diagnosis Center
Schedule Electrical Diagnosis Back to Master Troubleshooting Guide Electrical & Starting System Diagnosis Center If your marine diesel won’t crank, cranks slow, starts only sometimes, or keeps killing batteries, this hub gives you the fastest symptom-first pathway to the real cause — without random parts swapping. 805 Marine Diesel Mechanic provides mobile marine diesel diagnostics […]
Fuel Contamination & Filtration Issues Center
Fuel Contamination & Filtration Issues Center Fuel contamination is one of the most common causes of marine diesel performance problems — especially low power, loss of RPM, excessive smoke, rough running, and injector damage. This diagnostic center helps boat owners and technicians quickly identify filtration problems, fuel restriction issues, microbial contamination, and fuel system […]
Marine Diesel Aftercooler & Intercooler Problems
Marine Diesel Aftercooler & Intercooler Problems (Symptoms + Cleaning Guide) Aftercoolers and intercoolers play a critical role in modern turbocharged marine diesel engines. When these components become clogged, corroded, or internally restricted, engines can experience significant power loss, excessive smoke, overheating, and increased turbocharger stress. At 805 Marine Diesel Mechanic, aftercooler issues are one of […]
Marine Diesel Hard Starting (Cold vs Warm Engine Diagnosis)
Hard starting in marine diesel engines is usually caused by fuel delivery problems, air intrusion, compression loss, injector issues, or glow system failure — and the correct diagnosis depends heavily on whether the engine struggles when cold, warm, or both. At 805 Marine Diesel Mechanic, we frequently diagnose hard-start conditions for vessels operating in Ventura, […]
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 […]