Petrol injector cleaning and flow testing
Ultrasonic cleaning, flow testing and seal replacement for petrol injectors in our Auckland workshop, to help restore smooth running, power and fuel economy. Courier your injectors in from anywhere in New Zealand.
Why Simms for petrol injectors
- 01Injector specialists
Cleaning, flow testing and seal replacement for petrol injectors in road and performance vehicles.
- 02Ultrasonic cleaning and flow testing
Carbon and fuel deposits removed, then flow tested for spray pattern and balance.
- 03New seals fitted
Seals are replaced so the injectors seal correctly when refitted.
- 04Tested before return
Every injector is checked for leakage, electrical operation and flow consistency.
Rough idle, hesitation or using more fuel?
Over time, petrol injectors clog with carbon and fuel deposits, which affects spray pattern and performance. Cleaning and flow testing usually sorts it. Petrol injectors are not repairable: if one fails the flow test, it needs replacing.
Common signs your injectors need testing
- Rough idle or misfire
- Hesitation or loss of power when accelerating
- Higher fuel use
- Hard starting or long cranking
- Poor throttle response
Request a petrol injector flow test
Tell us the vehicle, injector type and symptoms. We'll recommend the most cost-effective option, and usually reply within one working day.
Petrol injector questions
Another question? Call +64 9 579 1159.
How long does it take?
Usually 1–2 working days, depending on workload and injector condition. Contact us if it's urgent.
Can I courier my injectors in?
Yes. Pack them securely and include your contact details and a note on the symptoms.
Do you test before and after cleaning?
Yes. Flow rate, spray pattern, leakage and electrical operation are tested before and after.
Can you repair petrol injectors?
No. We clean, flow test and replace the seals. An injector that fails the flow test needs replacing.
Which injectors can you test?
Most petrol injectors, including standard road vehicles, performance injectors and some direct injection. Send us your injector details to confirm.
Where is the workshop?
77 Leonard Road, Mount Wellington, Auckland 1060. Monday to Friday, 8am to 5:30pm.
Other workshop services
Need a part as well?
We hold far more diesel parts than we list online. If we don't have it, we can usually source it.