Injector Service

We provide Gasoline and Ethanol injector servicing and testing with modern ASNU injector servicing equipment in Finland. We can also service and test GDI and Piezo injectors that spray directly into the cylinder. Diesel and Etec injectors are not tested or serviced.

When is it time to service or check injectors?

Injectors should always be checked if the vehicle or injectors have been sitting unused for a long period of time, especially when the injectors have been stored dry outside the engine.

If the vehicle has suffered engine damage (melted piston, burnt valve, etc.), the injectors should be checked to avoid further damage.

If you have purchased a new or used set of injectors for a tuning project and are unsure whether they have been tested recently, we recommend having them checked. Even new injectors can have surprising flow differences between them.

For vehicles parked over the winter, it's a good idea to have the injectors checked in the fall at the end of the season so that they're ready to go in the spring. Spring is the busiest time for injector service, and queues can be long.

Injector Testing

We prepare a detailed test report showing, among other things, the maximum flow rates of the injectors, coil inductances, flow differences during dynamic testing, and possible leaks.

Injector Servicing

The service report includes test results before and after servicing, the percentage differences in flow between injectors, and any changes in injector flow.

During servicing, replaceable injector parts such as seals, filters, and possible pintle caps are replaced. For hose-type injectors, connecting hoses are replaced with ethanol-resistant hoses. Replacement parts are charged separately and itemized on the receipt.

Injector Maintenance and Testing Prices

Manifold Spray Injectors

  • Testing with report: 15 €* / injector
  • Service, including tests before and after servicing: 29 €* / injector
  • Spare parts charged separately, typically 5–9 €* / injector

Sidefeed Injectors

  • Testing with report: 17 €* / injector
  • Service, including tests before and after servicing: 33 €* / injector
  • Spare parts charged separately, typically 8–12 €* / injector

Hose Injectors with Hoses in Place

  • Testing with report: 20 €* / injector
  • Service, including tests before and after servicing: 38 €* / injector
  • Spare parts charged separately, from 15 €* / injector

High Pressure Injectors (In-Cylinder) – TSI, GDI, etc.

  • Testing with report: 23 €* / injector
  • Service, including tests before and after servicing: 45 €* / injector
  • Spare parts charged separately, typically from 10 €* / injector

Piezo High Pressure Injectors (In-Cylinder) – BMW, MB, etc.

  • Testing with report: 25 €* / injector
  • Service, including tests before and after servicing: 49 €* / injector
  • Spare parts charged separately, typically 3–6 €* / injector

* All prices include Finnish VAT (25.5%).

Delivery of Injectors

Injectors sent for service must be cleaned of loose external dirt, and any remaining fuel must be drained. Otherwise, an additional cleaning fee will be charged.

If the injectors are delivered installed in a fuel rail, removal of the injectors from the fuel rail will be charged separately.

Injectors can either be brought to us in person or sent as a parcel. We are unable to accept complete vehicles.

The service queue is usually 1–2 days. Injectors are serviced in the order they arrive.

Returns for consumer customers in Finland are sent as Cash on Delivery parcels, payable upon collection from the post office.

Returns outside Finland are shipped via DHL Express. Payment for injector servicing is made via PayPal or invoice before shipping.

Delivery and Pickup Address

Finjector.com
Isonpellontie 7
00720 Helsinki, Finland
Email: [email protected]
Phone: +358 50 517 3633

For questions about our injector testing and servicing, please contact us by email at [email protected].

Download the pre-fillable injector service form here.

Fill in your address details and what you want for us to do to your injectors. The other fields are optional.

News

15.06.2026

Finjector is closed during Midsummer Eve (Friday 19.6.2025)

We will be back to business on Monday 22.6.2025.

30.12.2025

Finjector wishes you Happy New Year 2026!

We will be closed from Wednesday Dec 31 at 2:00 PM and reopen on Friday Jan 2, 2026 at 9:00 AM.

Read more »

21.11.2025

Customs Duties and Taxes for Orders Outside the EU

Orders shipped outside the European Union may be subject to customs duties, import taxes, or other fees determined by the destination country's customs authority. These charges are not included in our product prices or shipping costs.

 

Read more »