If you've been quoted for “injector cleaning” at a dealership or general repair shop, you may have seen numbers well over $100. That price often isn't for cleaning the injectors themselves — it's for a fuel system service: a cleaning chemical run through the fuel system, plus shop labour. Here's how the different options compare and what you should expect to get for your money.
The two kinds of “injector cleaning”
1. On-car fuel system service
A cleaning solution is added to the tank or run through the fuel rail while the engine idles. It's convenient, but there's no way to measure each injector before or after, and heavily varnished or partially blocked injectors often aren't fully restored. Flat-rate pricing is common, and the price includes shop labour.
2. Off-car ultrasonic cleaning and flow testing
The injectors are removed and cleaned in an ultrasonic bath, where cavitation breaks up varnish and carbon on the filter basket, pintle, seat and spray tip. Each injector is then flow tested so you can see real numbers, check the spray pattern and confirm the set is balanced. This is the method that actually tells you whether an injector is good, bad or borderline.
What off-car injector cleaning costs at Budget Injector
| Ultrasonic cleaning + flow test after cleaning | $15 per injector |
| Before-cleaning flow numbers | +$5 per injector |
| Reverse flush (clears the internal filter basket) | +$5 per injector |
| Direct injection (GDI) or diesel | +$5 per injector |
Example totals
- 4-cylinder, standard clean + test: 4 × $15 = $60
- 6 port injectors with before numbers and reverse flush: 6 × $25 = $150
- V8 diesel, standard clean + test: 8 × $20 = $160
Payment is due at pickup, and typical turnaround is 1–2 hours, so most sets are back the same day.
What should be included for the price?
Whoever you use, ask these questions before you drop off a set:
- Do you flow test every injector? Without a flow test, you're paying for a cleaning you can't verify.
- Will I get the numbers? A printed flow sheet lets you compare injectors and keep a record for the build.
- Can I see before and after? Before-cleaning numbers show how much each injector improved — and whether one is simply worn out.
- Do you handle GDI and diesel? Direct injection and diesel injectors need different handling than port injectors.
Cleaning vs. replacing injectors
A new set of quality injectors can easily cost several hundred dollars or more. If a set is simply dirty, cleaning and flow testing it for a fraction of that is the obvious first step. If the flow test shows an injector is leaking, stuck or badly out of balance, you'll know exactly which one to replace — and you can buy a single injector or a matched set instead of guessing.
Ready to get your set tested?
Drop off at 19320 65 Ave #214, Surrey, BC — convenient to Langley, Delta, Abbotsford, the Tri-Cities and Vancouver & Burnaby. Book your cleaning or call (604) 809-7398.