Diagnostics, cleaning and repair
Injector services without the parts shop clutter.
Everything on this site points customers toward a repair enquiry, postal testing or workshop booking. No online part sales, no basket, no distraction.
Injector diagnostic testing
Initial checks can include electrical resistance, leak-down, spray pattern and comparative flow testing. This helps confirm whether a rough idle, misfire, poor starting or uneven fuelling issue is injector related.
- Pre-clean and post-clean comparison
- Individual injector condition notes
- Batch balance checks where suitable
Ultrasonic cleaning and servicing
Injectors that are suitable for service can be cleaned, back-flushed and fitted with appropriate service items such as filters, seals, spacers or caps where available.
- Contamination removal and spray improvement
- Service items fitted as part of the repair process
- Advice where cleaning is not enough
Historic and classic injector restoration
Older injectors, cold start valves and classic systems need careful handling. We assess condition first, then advise whether cleaning, seal work or specialist restoration is realistic.
- K Jetronic and cold start valve assessment
- Classic petrol injector restoration enquiries
- Support for rare or obsolete injector families
Workshop and tuner support
For garages, engine builders and restoration shops, testing can give the evidence needed before a customer authorises further work or replacement injectors.
- Multi-injector batch assessment
- Useful notes for customer job files
- Postal or local drop-off workflow
Testing and cleaning packages
Port and direct injection service routes.
The service page now explains the two main customer journeys clearly: port injector cleaning and direct petrol injector testing. Prices can be added later if you want them public.
Port injector testing and cleaning
For conventional petrol injectors removed from the inlet manifold. Suitable sets can be flow tested, spray checked, ultrasonically cleaned and retested.
- Flow comparison across the injector set
- Spray pattern inspection
- Service seals, filters or caps where available
High pressure petrol injector testing
For selected GDI, FSI, HPi, DiSi and similar petrol direct injectors. Suitability is confirmed before booking because equipment and injector condition matter.
- Leak and spray checks where supported
- Flow and delivery comparison where suitable
- Advice on cleaning, service or replacement
Seals and filter baskets
Where the injector type supports it, fresh service items can be fitted during cleaning. This is part of the repair service, not a parts-only sale.
- New seals where available
- Filter baskets where available
- Genuine kits can be discussed for specific jobs
Spray and flow analysis
Why the test matters.
An injector can pass fuel and still be wrong. A poor spray pattern can leave uneven coverage over the valve or piston, while a low flow rate can make one cylinder run lean compared with the rest.
For suitable injectors, the service can include before and after notes or a printed result summary so customers can see whether cleaning improved the set.
More specialist enquiries
Services for difficult petrol injector jobs.
The reference material points strongly at specialist petrol work, not general parts sales. These blocks give visitors more confidence before they contact you.
Calibration and balance checks
Comparative testing helps identify injectors that are technically working but not matched closely enough for road, track or race use.
High pressure petrol injectors
Selected GDI, FSI, HPi, CGi, DiSi and similar direct petrol injectors can be assessed where equipment and condition allow.
Piezo petrol injector enquiries
Siemens and Bosch Piezo petrol injectors can be triaged for suitability before any testing is booked.
Air-assisted injectors
Air-assisted petrol injectors and unusual inlet arrangements can be discussed before you remove or post parts.
Hose-to-rail injectors
Older hose-fed and rail-mounted injector assemblies can be assessed for safe service options and rebuild suitability.
Seized injector services
Where injectors are stuck, blocked or contaminated after long storage, we can advise whether careful recovery is worth attempting.
Rail rebuilds
Support for rails and assemblies.
Some enquiries are bigger than a single loose injector. Fuel rails, hose-to-rail assemblies and classic setups often need photos and part numbers before any work is agreed.
- Identify the system. Share the vehicle, engine, injector numbers and rail photos.
- Agree what to send. We will confirm whether loose injectors, a rail, or supporting parts are needed.
- Test and advise. You receive notes on leaks, flow, spray pattern and service suitability.
What customers ask