Joined in 2023 
82 
63 About this deal
When fuel injectors are working properly they adjust the amount of fuel being introduced to match the variable airflow. If kept clean and well-maintained, your fuel injectors can also maximise the car's fuel efficiency and minimise pollution. Second step: After torque tightening, the bolts need a further rotation of 180 degrees. This angle precisely sets the bolt torque, based on thread pitch and calculated stretch. Acontemporary diesel engine relies on high-pressure injector technology, and the Puma engine is no different. This Ford in-line four-pot diesel originated in the Duratorq TDCi for the Ford Transit, but it was used by several other manufacturers, including Land Rover in the Defender from 2007. If your vehicle's engine has started misbehaving in certain ways, it may need replacement fuel injectors. At Halfords, we're one of the UK's leading suppliers of all car parts with an extensive selection available online—and at our 600+ Halfords garages nationwide.
Last job: With a hot engine, the software automatically sets and adjusts the injector adaption values over five set points according to engine parameters.
Injector & Glow Plug Removal
Seat repair:When the injector seat in the head is contaminated or damaged, it can be cleaned or refaced by inserting a special cleaning or cutting tool down through the injector opening to re-create a flat, sealable face for the new sealing washers. Unplug the power: Next, unplug the injector loom feeds, then lever the plastic covers off from the loom mounts. These also cover the injector clamp fixing bolts. Engine abuse:The state of this injector, from a different TDCi Defender, shows why it’s important to maintain the engine in good health. The injector nozzle is coated with carbon and oil, making an efficient fuel spray pattern impossible. This injector hasn’t failed on its own, it’s been destroyed by neglecting other aspects of the engine.
On this 120,000-mile 2.4 Defender belonging to Karl Jane, another garage had previously reconditioned and refitted the injectors. But after they were coded to the car, the adaption values were way out, which would ultimately mean the injectors weren’t calibrated accurately at the ECU. Rather than cope with compromised performance, Karl opted to have new units fitted, this time by IRB Developments, where Ian Baughan now shows us the procedure for injector renewal on this 2010 Defender 90. Seals and washers play a crucial role in the correct running of high-pressure systems. For instance; with every new injector kit you will have a soft copper washer - actually, it's a high-pressure seal. Often, such problems can be prevented by cleaning the fuel injectors every 25,000 miles. Specialist products such as Wynn’s fuel injector cleaner are available from Halfords, with different versions for petrol and diesel engines. Other problems include: water in the fuel which can cause the injector nozzles to balloon; carbon can build around the injector nozzles; and combustion gas can blow up past the injector body if the copper seal between the injector and cylinder head fails, exacerbated by the injector clamp bolts stretching. If you're an older motorist, you may associate the job of feeding fuel into the engine with the carburettor. However, fuel injectors have been gradually taking over from carburettors since the 1990s. They're simply cleaner and more efficient. How to spot a faulty fuel injectorNew injectors: Each injector has a unique code on the top. Write each one down, noting which injector is in which cylinder. You’ll need that code for the software, later. Fuel injectors often start to cause problems when the nozzles get clogged. Symptoms of a faulty fuel injector include:
Fuel injectors are also known as injection valves. Comprising a valve and an atomising nozzle, injectors feed fuel into the combustion chamber of each cylinder. That's a vital role, because the engine requires the right combination of fuel and air to function. Rough idling with excessive shaking, jerking or vibration when the engine's running but the vehicle isn't moving Cleanliness within the fuel system is critical so, after removing pipes and components, ensure dirt cannot enter the resulting openings. The injector holes in the head also need to be cleaned to prevent dirt dropping into the engine, as explained in the captions.
Follow the process: Plug is located in the tip hole to prevent dirt ingress. Then helical brush (inset), spinning in drill, cleans the sides of the injector bores in the head.
Great Deal 
New Comment