Engines & Mechanical
Fault finding & diagnostics
Methodical diagnosis of intermittent faults, electrical gremlins, and mystery problems other engineers have given up on, so the real cause gets fixed instead of guessed at.
Overview
If it is intermittent, it is not solved yet.
Intermittent faults are the worst kind. The boat works fine when an engineer is on board, then stops working the next time you take it out. Most of the time the cause is small, but finding it takes a structured approach and the right test gear.
We work through the fault one assumption at a time. That means proving what is good before chasing what is bad, capturing readings instead of guessing, and writing down what was tested so the next visit, if needed, picks up where this one finished.
The aim is to fix the fault, not to throw parts at the symptom. If the right answer is a wait-and-watch with a data logger or sensor in place, that is what is recommended.
What's included
What a diagnostic visit covers.
- Pre-visit triage by phone to narrow the likely area
- Engine, fuel, electrical, and instrumentation checks as relevant
- Voltage drop testing across the suspect circuits, not just continuity
- Live load testing where the fault only shows under specific conditions
- Where helpful, a temporary data logger left in place to catch the fault
- A clear written summary of what was found and what is recommended
- Repair carried out the same visit if scope and parts allow
Process
How a diagnostic visit runs.
Describe the fault
When it happens, what triggers it, what was changed recently. The more context, the faster the diagnosis.
On-board testing
Structured testing at your mooring. Readings captured rather than relying on memory.
Fix or plan
Where the fix is small and parts are on the van, the repair happens then. Where it needs ordered parts, you get a clear quote.
Verify
Re-test under the conditions that cause the fault, not just a quick start-up. The fault stays fixed.
City & Guilds qualified
Properly trained marine engineering, not handyman improvisation.
Mobile to your mooring
Work happens at your boat wherever possible, saving time and hassle.
Breakdown callouts
Stuck on the water? Get in touch and a callout can be arranged.
Fully insured
Public liability cover in place for every job, on every boat.
Keep exploring
Related services
Engineering
Engine repairs
Diagnosis and repair across all marine engine types, getting you back on the water with minimum downtime.
Learn moreEngineering
Engine installation & re-engining
Complete engine installations and full re-engining projects, sized and specified to suit your boat.
Learn moreEngineering
Diesel heater installs
Webasto and Eberspächer style diesel heating installed cleanly and safely for year-round comfort.
Learn moreReady when you are
Book fault finding & diagnostics for your boat.
Tell Oli about your boat and what you need. Quotes are honest, the work is done at your mooring, and the schedule is yours to choose.