Fuel System Services
At Danny Boy Marine Services, we don’t guess — we diagnose and fix your fuel system the right way. If your boat is hard starting, losing power, burning too much fuel, or throwing codes, the problem usually starts in the fuel system — and that’s where we dominate. We specialize in VST (Vapor Separator Tank) service, fuel pump testing and replacement, fuel filter replacement, complete fuel system diagnostics, and professional injector cleaning and servicing.
Your VST service should be done every 400 hours to prevent contamination, clogged internal screens, pressure loss, and costly injector damage. This is critical maintenance that protects your engine and keeps it performing at its best.
Your fuel filters and water/fuel separator should be replaced every 100 hours or once a year, whichever comes first — and even more often if the boat has been sitting for a while. Old fuel, condensation, and water contamination are some of the biggest causes of fuel system failure. Waiting too long can lead to rough running, injector issues, and major repairs.
We inspect for water intrusion, restrictions, corrosion, weak fuel pressure, and hidden issues other shops overlook. No guessing. No random parts swapping. No wasted money. Just real diagnostics, real results, and reliable performance. When we’re done, your engine runs stronger, cleaner, and ready for the water. If you want it fixed right the first time - we're the guys for the job.