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Proud authorized distributor of:

Welcome to Diesel's Fuel Injection Service

Home of Diesel the Boxer Dog

We strive to offer the finest, end-to-end fuel injection services in New Hampshire. With roots in the industry dating as far back as 1953, Diesel’s Fuel Injection Service is fully equipped to service all of your diesel fuel injection needs.

Internal view of car engine pistons and cylinders
Internal combustion engine pistons with fire in cylinders

Honest, reliable service you can always count on.

DIESEL & GAS FUEL INJECTION SERVICES NH

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Diesel Fuel Injection Services

Professional injector testing, fuel system repairs, and rebuilding services for automotive, commercial, marine, and industrial diesel applications throughout New England.

Diesel Injector Repairs

Testing, cleaning, rebuilding, and repair services for diesel injectors and fuel injection systems.

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Fuel Pump Testing & Repair

Professional testing and repair services for diesel fuel pumps and related fuel system components.

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Marine Injector Services

Specialized marine fuel injector testing and rebuilding for recreational and commercial vessels.

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Fuel Injection Solutions

Diesel Equipment

  • Truck Fleets

  • Farm Equipment

  • Wood Chippers

  • Generators

  • Boats

  • Lawn Mowers

  • Vehicles

Diesel Services

  • Failure to Start

  • Stalling

  • Black Smoke

  • Skipping

  • Rough Idle

  • Fuel in Engine Oil

  • New Component Sales

Testing & Cleaning

  • Gasoline

  • Diesel

  • Cleaning

  • Testing

REpairs & Rebuilds

  • Diesel

  • Servicing

  • Pumps

  • Injectors

  • Turbos

Proudly Servicing:

    • Colebrook

    • Concord

    • Conway

    • Derry

    • Hampton

    • Keene

    • Lebanon

    • Manchester

    • Meredith

    • Nashua

    • North Conway

    • Pittsburg

    • Plaistow

    • Portsmouth

    • Rochester

    • Boston

    • Gloucester

    • Newburyport

    • Worcester

    • Brockton

    • Hyannis

    • Chatham

    • Falmouth

    • Nantucket

    • Martha's Vineyard

    • Portland

    • South Portland

    • Bitterford

    • Lewiston

    • Auburn

    • Augusta

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