Fuel Injection Testing & Rebuilding in Decatur, AL

City Diesel provides diesel fuel injection testing and rebuilding for mechanical and modern electronic systems. From mechanical injection pumps and nozzles to common rail pumps, common rail injectors and electronic unit injectors, our Decatur, Alabama fuel shop can help you assess component condition and determine the next step.

City Diesel is the only Bosch-authorized common rail fuel shop in Alabama.

Carbon Zapp MTBR test stand with fuel injection components connected in City Diesel's Decatur fuel shop
Our Carbon Zapp test stand expands fuel injection testing capabilities at City Diesel.

Mechanical injection pump rebuilding & testing

We rebuild and test mechanical diesel injection pumps. Whether you are working on an older diesel truck, tractor or industrial engine, contact us with your pump's identification number to discuss your application.

Mechanical nozzle & injector rebuilding & testing

We test and rebuild mechanical diesel nozzles and injectors. Testing helps establish their condition so you can make an informed decision about rebuilding or replacement.

Common rail pump testing

We offer testing for almost all models of common rail diesel pumps. Contact us with your pump's part number to confirm coverage and discuss testing before purchasing replacement parts.

Common rail injector testing

We test almost all models of common rail diesel injectors. Provide the injector part number and engine information so our fuel shop can confirm testing coverage for your application.

Electronic unit injector testing

We test almost all models of electronic unit injectors (EUI). Provide the injector part number and engine information so our fuel shop can confirm the appropriate testing service.

Expanded testing with Carbon Zapp

Our new Carbon Zapp MTBR test stand expands our testing capabilities for common rail pumps, common rail injectors and electronic unit injectors. Combined with our mechanical fuel injection equipment and experienced technicians, it allows us to support a broad range of diesel fuel systems.

Carbon Zapp equipment image showing a unit injector mounted in a vertical test fixture
Supplied Carbon Zapp equipment image showing a unit injector testing setup.

Bosch-authorized fuel injection expertise

Our fuel shop team combines mechanical fuel injection rebuilding experience with modern common rail and electronic unit injector testing capabilities.

When you contact us, you'll speak with someone who can help identify your application, confirm testing coverage and discuss your repair options.

Discuss your fuel injection needs

Contact City Diesel with your engine model, pump or injector part number, and a description of the problem. We can confirm application coverage and discuss testing or rebuilding options.

Call 256-350-5160 Contact City Diesel