Sharp Autos

Diesel injector removal, or common rail diesel extraction, is required when the steel of the injector fuses to the alloy of the cylinder. This often occurs due to rust and carbon build up around the injector. This problem is generally referred to as a stuck or frozen diesel injector.

Vehicles suffering from this problem will display a variety of related issues from excessive fuel correction, hesitation under full load or excessive leak back. These problems will often be the result of 1-2 faulty injectors but can on occaision require the removal of all 4.

Specialist equipment has to be used in order to extract these injectors due to the pressure required to remove them (this can often be in the region of 8-10 tons).

These extractions can also include cleaning the injector bore, resurfacing the injector seat and coding the new injector to the ECU.

Experienced and knowlegable operators may also develop customised equipment and techniques given that not all vehicles will follow the same process. This bespoke equipment will be an addition to the hydraulic removal tool and not offered by manufacturers. This approach allows successes where avenues only relying on the limitations of purchased equipment may fail.

Without due care and experience, vehicles are regularly bought to specialist operators in injector removal visibily showing evidence of crude extraction techniques. In thiis case many of the injectors will be damaged and will be unsuitable for reconditioning and re-use. In this instance, new injectors will have to be used adding further significant cost.

Vehicles such as the Renault Trafic / Vauxhall Vivaro / Nissan Primastar 1.9L are considered the worst offenders when we look at problematic or stuck diesel injectors. From 2001 onwards, the 1.9L 8 valve diesel vehicles suffer from corrosion on all 4 injectors. The No.4 injector (next to cambelt) tends corrode at a faster rate than the others which is often caused by the lack of protection from road spray.

From 2007 onwards, with the Renault Trafic / Vauxhall Vivaro / Nissan Primastar 2.0L , water ingress to top of cylinder head causes corrosion to all 4 injectors. Upon inspection, all 4 injectors can often be found partly immersed in a substantial volume of water.

The effective removal of stuck diesel injectors can save vehicle owners considerably if the process is administered by a professional garage. Vehicles owners can save the cost of a new cylinder head and possibly even a new vehicle.

In summary, in injector removal is required for a vehicle, an injector removal specialist garage should be used.

Fuel injectors are electo-mechanical valves that allows the ECU precision control over fuel flow to the engine.

Injector Removal

Fuel system contamination and corrosion are often the key sources of injector failure or inefficiency. In this instance, to improve and restore vehicle performance, injector removal of the faulty injectors is required.

Reconditioned Injectors

It is recommended that a new injector is used to replace a faulty injector, however, a reconditioned injector may also be selected with the vehicle owners consent or instruction.
Reconditioning injectors generally involves submersing used injectors in an ultrasonic bath and being fitted with a new O ring and a new strainer.

You can Buy Injectors, including Bosch, Piezo and reconditioned units from Sharp Autos.

Car batteries are the predominant resource and initial conductor to the process of engine ignition in automotive vehicles. They are also integral to the function of general electrical and lighting systems which are essential when driving under many different temperature, weather and light conditions.

Car batteries in normal automotive use are continually re-charged through the vehicle during motion and therefore only need other means when there is insufficient battery power to create ignition or when there is a general fault or failure.

Common car battery faults include

Prolonged disuse in a low or zero charged state (sulphation)

Shorted cells

Broken connections or terminals or plates due to vibrations or corrosion

Low electrolyte levels

Sulphation occurs when a battery has been left in a zero or low state of charge for a long period of time. Suphation is clearly evident from the formation of non-conductive lead sulphate crystals on the battery plates. These crystals block the passage of current through the electrolyte present and therefore inhibit the possibility of recharge.

Corrosion is caused by a number of factors such as water or dirty terminals/connections. A covering of dielectric grease is often administered when a new battery is installed to combat the effects and possibility of corrosion. This grease can be used at any time to help increase the longevity of the batteries lifecycle. When corrosion is present, the subsequent electrical resistance caused by its existence can prevent a vehicle from starting.

Electrolyte levels can diminish from normal electrolysis in the battery or from leakage or spillage. These levels should only be topped up with distilled or demineralised water.

Car batteries will predominately fail due the active material in the battery plates shedding and eventually short circuiting the plates themselves and rendering the battery unable to facilitate the necessary recharging process.

When an internal fault occurs the issue is generally only resolved by the replacement of a new battery unit itself. A battery should only be replaced if you are fully aware of the correct fitting procedure or have an experienced and qualified operative to conduct the fitting on your behalf.

In summary, car batteries are an integral part of many vehicle systems and whose maintenance is often overlooked and even neglected. Vehicle owners should conduct regular battery inspection to ensure terminals are clean, electrolyte levels are optimal and that they are rarely left in a low or zero state of charge for long periods of time.

Welcome to Sharp Autos Blog which aims to inform and update readers on all issues involving automotive maintenance, information and repair.

This section will advise car owners on general car maintenance which can assist in the prevention and early warning signs of vehicle damage and subsequent repair.
Readers will also be informed of the detailed processes and equipment required to repair complex vehicle faults and also the more common areas such as brakes, oil, clutch and battery change