Propulsion engines
Cummins marine engine service and diagnostics
Cummins marine diesels are widespread in this region across sportfish, trawler and cruiser installations. I service, diagnose and survey them, including electronic engine management diagnosis and the injection and cooling work these engines commonly need as hours accumulate.
Cummins on this coast
Cummins appears throughout the local fleet from repowered older hulls to current production boats, which means a wide spread of both mechanical and fully electronic engines.
What I see most on these engines
Injection system condition
Fuel contamination is the leading cause of injection problems, and correcting the filtration matters as much as replacing injectors.
Aftercooler and heat exchanger fouling
Restricted cooling shows up first as a gradual temperature climb and higher exhaust gas temperatures under load.
Engine management faults
Codes are read along with live data, and the wiring is tested before parts get changed.
Cummins marine diesel injection faults commonly originate in fuel contamination, so a durable repair addresses primary and secondary filtration and water separation alongside the injectors themselves.
Factory certification is held with Volvo Penta. Work on other makes draws on 20 years of independent marine diesel experience rather than a manufacturer programme, and I will say so plainly if a job belongs with a dealer.
Services for Cummins owners
Mechanical Marine Surveys
A documented condition report on your propulsion engines and generator, from visual inspection through sea trial.
Diesel Repair
Engine, transmission and generator service on marine diesels, from routine maintenance through a complete repower.
Engine Diagnostics
Find the actual cause before parts get bought, using engine management data, live readings and a borescope.
Other propulsion makes
Volvo Penta
I spent six years at a Volvo Penta dealer and hold Volvo certification, and I began performing marine diesel e...
Caterpillar
Caterpillar marine diesels power a large share of the sportfish and motor yacht fleet on this coast, and they ...
Yanmar
Yanmar powers a great many sailboat auxiliaries and smaller propulsion installations along this coast. They ar...
Cummins: common questions
Do you service Cummins marine engines?
Yes. Over 20 years in marine diesel I have worked across effectively every make of marine engine found on this coast, including Cummins. Call with the model and hours and I will tell you honestly whether it is a job I should take or one better sent to a dealer.
Can you survey a boat with Cummins engines before I buy it?
Yes. A mechanical marine survey covers compression on every cylinder, engine management data, a sea trial under load and laboratory fluid analysis, regardless of engine make.
Do you carry parts for this brand?
Common service parts for the engines I see most often, yes. Model specific components are ordered once the fault is confirmed, which avoids paying for parts that turn out not to be the problem.
Tell me what the engine is doing
Describe the symptom on the phone and most of the time the problem is narrowed before I arrive. Surveys are booked around your sea trial date.