Diesel's Fuel Injection Service offers the finest, end-to-end fuel injection services in New Hampshire, with roots dating back to 1953. They are fully equipped to service all diesel fuel injection needs for trucks, cars, and boats. The business is known for its incredibly warm and welcoming staff, who are extremely knowledgeable and provide excellent customer service. Reviews highlight the owners as some of the kindest and most wholesome people, going out of their way to help customers even with issues outside their normal work. They are wonderful and full of advice, completing specialized rebuilds efficiently. Customers report being blown away by the kindness and highly recommend the company, stating they will return again and again.
Thank you for always the best service and experience!
August 2026
Had Diesel's do a 6.2 Detroit injector pump 5 years ago. Phone communication may be a soft spot but this place DELIVERS for service provided. Absolutely NAILED it and the van runs flawless since. Five stars!!
August 2025
Awesome service, would recommend to anyone that has issues with injectors. Plus we're extremely helpful with answering questions and not being all about $$. Thanks so much
