Cummins QSB Fuel System Failures:
Cummins QSB Fuel System Failures: Hard Start, Power Loss & Injector Protection Guide The Cummins QSB series is one of the most popular electronically controlled marine diesel platforms operating throughout Ventura, Channel Islands Harbor, Oxnard, and Santa Barbara. While extremely reliable, the QSB fuel system is highly sensitive to contamination, restriction, and improper filtration. With […]
Low Power / Loss of RPM Diagnostics Center
Low Power / Loss of RPM Diagnostics Center A marine diesel engine that cannot reach rated RPM or struggles to maintain speed under load is almost always suffering from restriction, imbalance, or efficiency loss somewhere in the system. Low power problems are among the most common service calls because multiple systems — fuel, air, cooling, […]
Fuel System Diagnosis Center.
Fuel system problems are one of the most common causes of starting issues, power loss, excessive smoke, and performance problems in marine diesel engines. This Fuel System Diagnosis Center organizes the step-by-step troubleshooting process used by trained technicians at 805 Marine Diesel Mechanic. This page acts as a structured fuel system hub connecting all […]
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 […]