Fuel Injector Cleaning, Service & Repair

Comprehensive Fuel Injection System Cleaning and Repair at Fifth Gear Automotive Repair

Over the years your fuel injectors can become clogged, and begin to malfunction. Fuel varnish, and sometimes dirt can build up to the point that the fuel injector can no long inject enough fuel into the combustion chamber. This may cause the engine to run lean, hesitate, misfire, or in some cases stall completely.

Differing Fuel Injectors in European, Domestic, and Import Vehicles

Fuel injectors come in many different styles, in both mechanical and electronic form. However all types of fuel injectors are vulnerable to clogging and can require service or cleaning. None are immune, and it does not take much to effect fuel flow. The injector opening is very small, and even tiny amounts of buildup can affect its function.

Servicing Fuel Injectors

The cure for a clogged and dirty injector is cleaning. There are a multitude of fuel additives that claim to clean fuel injectors, but most of the time, their results are minimal. Injectors can be cleaned with pressurized solvents or can be removed from the car for ultrasonic cleaning. If the fuel injector is too clogged to respond to cleaning it will need to be replaced, but only as a last resort.

A clean injector will spray a fine, cone-shaped mist that will combust fully and quickly. This translates into better fuel economy, increased throttle response, and reduced risk of engine damage.

Fuel Injector Testing and Cleaning at Fifth Gear Automotive Repair

Fifth Gear Automotive Repair diagnoses injector problems before cleaning anything. The technician reads misfire counters and fuel trim data with the manufacturer scan tool, checks fuel pressure against the factory value and tests injector resistance and flow, so the repair matches the fault rather than assuming every rough idle is a dirty injector.

Port injection and direct injection fail differently. Port injectors spray onto the back of the intake valve, so the valve stays clean and a pressurized on-car solvent service usually restores the spray pattern. Direct injection sprays straight into the cylinder at very high pressure, which leaves the intake valves with nothing washing them, and carbon builds up on the valve itself. On European direct injection engines that means the intake has to come off and the valves are cleaned mechanically. No additive poured into the tank reaches that deposit.

Injectors that fail a flow or leak-down test are removed and bench tested, and replaced in a set where the manufacturer specifies matched flow rates. New seals, O-rings and hold-down hardware go in every time, because a reused injector seal is a common source of a rough cold start and a fuel smell.

Symptoms worth booking for: rough idle, a hesitation or stumble under light throttle, a misfire code, a drop in fuel economy or a fuel smell after start. Fifth Gear Automotive Repair services fuel systems on European, domestic and import vehicles across the Dallas-Fort Worth metroplex.

Book Your Fuel Injector Repair Today!

There is much debate over the best way to avoid clogged fuel injectors. Some say additives or using gasoline with sufficient cleaning agents to keep deposits from forming. Whatever method you use, when it is time for fuel injector service and cleaning, come to Fifth Gear Automotive Repair for all your European, Domestic, or Imported vehicle needs! We will make sure your injectors spray the way the engine was designed for.

Every vehicle that comes into Fifth Gear Automotive Repair gets a free digital inspection. You receive photos of what the technician found, a written estimate and a plain explanation of what needs attention now and what can wait. Nothing is started until you approve it. Fifth Gear Automotive Repair does not quote a repair over the phone before seeing the vehicle, because an accurate answer requires an inspection.