What are the signs of a faulty injector?

Rough running, a misfire on one cylinder, black or white smoke, a fuel smell, poor fuel economy or a car that is slow to start. The engine warning light often comes on, but not always.

Can injectors be cleaned instead of replaced?

Sometimes. Deposits can be cleared, but a worn or internally damaged injector will not recover. We test first and tell you honestly which option makes sense.

Do I need all injectors replaced at once?

Not usually. If testing shows one injector is out of range, that one can often be replaced on its own. We will advise if the others are close to their limits.

RH Auto Engineering

Fuel injection repairs

Fuel injection has been part of our work since we opened in 1991. We test which injector is at fault before replacing anything — book in if you have a misfire, smoke, a rough idle or a strong fuel smell.

Contact us now Call 0121 544 3736

Why book with us

Fuel injection repairs with clear advice.

Injectors meter fuel into the engine thousands of times a minute. When one sticks, leaks or sprays badly you get misfires, hesitation, heavy smoke, poor economy and, on diesels, hard starting. Guessing at which one is faulty gets expensive quickly.

We read live data and fault codes, compare injector correction values on diesels and check for leak-off or seal problems. Depending on what we find, the fix might be cleaning, new seals, or a replacement injector coded to the engine.

Petrol and diesel

Port injection, direct injection and common rail diesel systems.

Test before replacing

Live data and correction values used to find the faulty injector.

Coded when fitted

Replacement diesel injectors coded to the engine control unit where required.

Fuel injection repairs

Fuel injection work we carry out

Clear expectations, no surprises. If anything extra is needed, we explain it first.

Fault code reading and live data checks on the fuel system.
Diesel injector correction and leak-off testing.
Injector cleaning where the fault allows it.
Injector seal and washer replacement to cure leaks and chuffing.
Injector replacement and coding, followed by a road test.

Fuel injection repairs

Common questions

What are the signs of a faulty injector?: Rough running, a misfire on one cylinder, black or white smoke, a fuel smell, poor fuel economy or a car that is slow to start. The engine warning light often comes on, but not always.
Can injectors be cleaned instead of replaced?: Sometimes. Deposits can be cleared, but a worn or internally damaged injector will not recover. We test first and tell you honestly which option makes sense.
Do I need all injectors replaced at once?: Not usually. If testing shows one injector is out of range, that one can often be replaced on its own. We will advise if the others are close to their limits.

Areas served

Serving drivers across the local area

We provide fuel injection repairs for customers from across the region — book online or call us.

Experts in fuel injection repairs

Tell us your car and symptoms, we will advise honestly.

Serving Oldbury, West Midlands and surrounding areas towns. Message or call and we will outline likely costs before we book you in.

Contact us now Call 0121 544 3736