Routine maintenance, clogged, rough-running, or sat too long — we clean, flow-test, and rebuild them on an ASNU M-5000. You ship them, we dial them in.
Every injector comes off the bench cleaned, resealed, and flow-tested against the set.
Before
One injector from the set — caked in carbon and varnish. Spray pattern breaks up, flow drops below spec.
After
The same set after the bench: cleaned, resealed, and flow-matched.
Individually spray tested and inspected for atomization quality, leak down, and electrical resistance — problems flow data alone won't show.
Each injector's output in cc/min against the full set. Factory tolerance runs about 2–4% — the report shows the exact spread we measured.
New o-rings and filter baskets as routine, other parts when your injectors need them, itemized at cost. The report documents before/after flow, spray grades, variance, and recommendations.
And you get the data to prove it. Every set ships back with a report like this — before and after flow, spray grades, and the variance across the set.
Owner-operated, and it shows. Don't take our word for it — read the reviews.
"I sent my boat's fuel injectors in from Charleston and had them back in my hands in just 4 days. They didn't just service the injectors — they took the time to offer advice on other potential issues I should check on my motor. That kind of customer service is hard to find these days."
Charleston, SC · Google review
"Fast fast turn around even on a Saturday! Kept me up to date on the progress, also sent paperwork on them, not just 'yea they good' on a txt or email. What they do is 200% 'dialed in.'"
Justin · Google review
"Travis and Jason went through all injectors quickly so I could get back on the water for an event by the weekend. They helped me troubleshoot the engine farther and we found the likely culprit beyond the injectors."
T Borto · Google review
The short answers — call or email if you need more.
We show you the result on your diagnostic report and we don't charge for that injector. The rest of the set still gets the full service, and we'll point you toward a replacement or rebuilt unit if one's a good fit.
No. The UPS QR code we email lives on your phone, and any UPS counter scans it and prints the label for you. If you'd rather print at home, the PDF works too, or grab the paper form and ship with the carrier of your choice.
Plan on about a week door to door. UPS Ground typically runs two to three business days each way, with our 48-hour service window in between. Need it faster? Call us before you ship and we'll work out the timing.
Yes, when your injectors need them. O-rings and filter baskets are replaced as routine; seals, teflon rings, and pintle caps go on when your injector type calls for them. Every part is itemized at cost on your invoice, and one per-injector price covers cleaning, testing, parts, and the diagnostic report.
No. Diesel injectors run at far higher pressures (commonly 20,000+ psi for common-rail systems) and require specialized high-pressure test equipment we don't operate. We focus on gas marine fuel injectors: outboards plus standard top-feed inboards like MerCruiser and Volvo Penta gas. For diesel work, look for a shop that specifically advertises common-rail or HEUI service.
Tell us about your injectors. We email your UPS label. You drop the box.
We cover the label and bill once, when your report is ready. No card to start.
Ship Your Injectors →If an injector arrives beyond saving, you don't pay for it.
Prefer to ship your own? · Questions? (864) 400-5775