Injector and Fuel-System Repairs in Tyne and Wear

Fuel has to arrive at the right pressure, in the right amount and at the right moment. A pump pushes it from the tank, filters clean it, and injectors spray it into the engine. If any link falters, the engine runs badly.

Petrol and diesel systems differ. Diesel injectors work at very high pressure and are sensitive to dirt, so careful handling matters.

Symptoms to take seriously

Faulty injectors and fuel supply problems tend to overlap with ignition, air and sensor faults, so symptoms alone do not give the answer. A fault code scan and testing tell us far more.

Smell of fuel, or visible leaking fuel, is a fire risk. Do not use the car and arrange recovery. If you have put the wrong fuel in, do not start the engine; get help.

• Rough idle or misfiring
• Hard starting or stalling
• Black or white smoke from the exhaust
• Loss of power or hesitation
• Worse fuel economy
• Fuel smell

What the work involves

The first step is diagnosis. At Banks of the Tyne in Hebburn that means reading fault codes, checking fuel pressure, and testing whether individual injectors spray and flow correctly. On some engines the leak-off or balance of each injector can be checked.

If an injector is faulty it may be cleaned, or replaced. Some modern injectors must be coded to the engine control unit after fitting so the engine knows their characteristics. Other work includes fuel pumps, filters, pressure regulators and pipes, depending on what testing shows. After the repair we confirm pressure and running.

What affects the outcome and the cost

Injector type is the biggest factor: common-rail diesel injectors are a different proposition from simple petrol injectors, and the parts differ greatly. Whether one or all need replacing matters as well; fitting only one when others are also worn may bring problems soon after.

Contamination changes everything. Dirty or wrong fuel can damage the pump and injectors together, so the tank and lines may need cleaning. If so, we will explain that at the estimate.

• Petrol or diesel system type
• Number of injectors affected
• Coding or programming needed
• Contamination in the tank or lines

Alternatives and caution

Fuel additives and injector cleaners are sometimes suggested. They may help mild deposits, but they are no substitute for diagnosis, and they will not fix a mechanical fault.

Because other faults mimic injector trouble, we would rather prove the cause than replace parts hopefully. Repair is not certain until testing is done.