PETROL INJECTOR CLEANING AND TESTING
Professional petrol injector testing and ultrasonic cleaning · Trusted since 1971
PETROL INJECTOR CLEANING & TESTING IN CAPE TOWN
Dirty or partially blocked fuel injectors can reduce engine performance, increase fuel consumption and cause rough idling or hesitation during acceleration.
At JEG Diesel, we provide petrol injector testing, ultrasonic cleaning and flow-rate testing for petrol vehicles across Cape Town and the Western Cape.
With over 50 years of automotive experience, we use specialised injector testing equipment to assess spray patterns, flow rates and injector performance, before and after cleaning.
Where injectors are suitable for cleaning, this is typically more cost-effective than replacing parts. It can also dramatically improve engine output and fuel efficiency.
WHAT CUSTOMERS SAY
SIGNS YOUR PETROL INJECTORS MAY NEED CLEANING
We recommend having your injectors tested if you notice:
- difficulty starting
- rough or uneven idling
- hesitation during acceleration
- increased fuel consumption
- higher exhaust emissions
- engine misfires
Early testing can often prevent more expensive repairs.
OUR PETROL INJECTOR CLEANING SERVICE
Our service includes:
- professional injector testing
- flow-rate measurement
- spray pattern analysis
- ultrasonic cleaning
- replacement of injector filters, seals and O-rings where required, using quality replacement components
- post-cleaning flow and spray pattern testing
Every injector is tested individually before and after cleaning, so we can verify measurable improvements in flow rate and spray pattern.
OUR PETROL INJECTOR TESTING WORKSHOP
JEG Diesel operates a fully equipped workshop with specialist fuel injection testing equipment for both petrol and diesel vehicles.
Our technicians test injector flow rates, spray patterns and overall performance before recommending cleaning or replacement.
Where petrol injectors are dirty and clogged, we then use ultrasonic cleaning. This involves using high-frequency sound waves to reach and break up deposits inside the injector nozzle.
This is significantly more effective than simply leaving injectors fitted to the engine and running a pressurised cleaning through the fuel rail. It can restore existing injectors to their full, original performance.
Why ultrasonic cleaning beats additives and on-car cleaning
Fuel additives can help slow the build-up of deposits, but they can’t remove hardened carbon and varnish from inside the injector nozzle. On-car (induction) cleaning goes a step further, flushing a cleaning solution through the fuel rail. However, it treats the injectors as a group, with no way of confirming the condition of each one.
Ultrasonic cleaning removes the injectors from the engine so each one can be cleaned thoroughly. Just as importantly, every injector is individually tested before and after cleaning, so the improvement in flow rate and spray pattern is measured and verified rather than assumed.
When should you have your petrol injectors tested?
It’s worth booking an injector test if you notice:
- increased fuel consumption
- rough or uneven idling
- a noticeable loss of power
Testing is also a sensible preventative step for vehicles that have passed 100 000 km, or before setting off on a long road trip.
Why choose JEG Diesel?
- Over 50 years of experience
- Specialist fuel injection knowledge
- Advanced injector testing equipment
- Honest advice based on testing results
- Competitive pricing
- Fast turnaround
JEG Diesel has proudly served customers across Cape Town and the Western Cape for over 50 years. Generations of local motorists have trusted us for honest advice and quality fuel injection work.
FREQUENTLY ASKED QUESTIONS
What causes petrol injectors to get clogged or dirty?
Injectors accumulate carbon and varnish deposits over time as a normal by-product of combustion, particularly at the nozzle tip. Lower-quality fuel accelerates this build-up, and vehicles left standing for long periods are also prone to it – the fuel residue can harden inside the injectors.
A quality fuel additive used regularly can help slow this process, but some build-up is a normal part of long-term engine use. Eventually injectors require proper cleaning.
How do I know if my petrol injectors need cleaning?
Common symptoms include rough idling, hesitation during acceleration, increased fuel consumption, reduced engine performance and engine misfires. However, these symptoms can also have other causes, which is why testing is recommended before replacing injectors.
Is injector cleaning better than replacing the injectors?
If the injectors are mechanically sound, ultrasonic cleaning is often a highly effective and much more affordable alternative to replacement. Testing allows us to determine whether cleaning is likely to restore proper performance.
How are petrol injectors cleaned?
There are two main approaches. On-car cleaning (also called induction cleaning) involves running a pressurised cleaning solution through the fuel rail while the engine is running, treating all the injectors as a group. This can help with light to moderate build-up, but doesn’t allow individual injectors to be tested or verified.
At JEG Diesel, we use ultrasonic cleaning instead: the injectors are removed from the engine and cleaned using high-frequency sound waves that reach deposits inside the nozzle. Then each injector is flow-tested individually to verify optimal performance before it’s refitted.
Will injector cleaning improve fuel economy?
It often can. Dirty injectors may not deliver fuel efficiently, causing the engine to consume more fuel. Restoring correct fuel delivery can improve both performance and fuel economy.
How long does petrol injector cleaning take?
Turnaround depends on the number of injectors and their condition. We’ll provide an estimated timeframe before work begins.
Can you remove and refit the injectors?
Yes. We can remove and reinstall the injectors in our workshop. If preferred, you can also courier the injectors to us directly for testing and cleaning.
Do you work on all makes of petrol vehicles?
Yes. We service petrol injectors for most makes and models of passenger vehicles, light commercial vehicles and performance vehicles across the Western Cape.
Get in touch
Call us on +27 21 300 3616 or complete the enquiry form below and one of our team members will contact you shortly.
- Service across Cape Town & the Western Cape
- Collection & delivery of injectors and diesel pumps
- Cost-effective repair solutions
- Advanced diagnostic testing & calibration
- High-quality workmanship and finishing
6 Amphion Street, Paarden Eiland, Cape Town