Repair and testing of Diesel Fuel Pumps & Diesel Injectors. Petrol Injector flow testing and servicing.

Diesel injector and pump testing. Specialist repairs of diesel injectors and pumps for all types of engines, for cars, commercial, agriculture, plant, marine and any diesel fuel injection system from classic to modern day engines.

We also offer a petrol injector cleaning and flow testing service with guaranteed results, our petrol injector cleaning service is available to the automotive, motorcycle, marine and other related industries.

Send your fuel injectors and diesel pumps in for an honest, comprehensive fault-finding test or if time is an issue contact us to supply you a new or reconditioned service exchange unit.

We have invested in the latest test equipment and training to ensure that all repair work is done to the highest standard possible.

If you are in the area testing and cleaning of units can be done while you wait but please contact us first to arrange this.

Read more about our Diesel Injector & Petrol Injector Services →

Cleaning of Diesel Particulate Filters, Selective Catalytic Reduction units and Exhaust Gas Recycling coolers.

Professional cleaning and regeneration of Diesel Particulate Filters (DPF’s) Selective Catalytic Reduction units (SCR) and Exhaust Gas Recycling (EGR) coolers for all vehicles (Euro 6 included).

Failure to clean or replace blocked exhaust filters can result in poor engine performance, increased fuel consumption and finally engage engine management warnings - leading to expensive repair bills.

Our DPF cleaning service in Shrewsbury uses state of the art technology to provide a fast and cost-effective solution. Our regeneration process achieves 98% of the original new condition with certified results.

As well as generating significant savings for you, it removes the need to undertake costly on-going repair bills or having to buy expensive new filters.

We pride ourselves in an effective regeneration of these units in a quick turn-around ensuring minimum down time of your vehicle.

Read more about our DPF, CAT, SCR & EGR Cooler Cleaning and Regeneration Services> →

Supplying performance VAG injectors. Fitment of supplied high flow nozzles. Viezu remapping and Tuning.

Specialising in the supply and calibration of high performance diesel injectors for VAG diesel engines. Upgrades to diesel fuel injectors using high flow nozzles.

Calibration of the injectors ensure that the flow characteristics of each high-performance diesel injector is balanced to obtain the best possible performance. Fuel delivery and mapping charts available on request.

As a Viezu remapping approved agent we offer ECU remapping, car remapping and dyno tuning for all types of vehicles; Cars / Vans / HGVs / Tractors / Motorhomes.

Improve your driving experience by having your vehicle's engine remapped to be more responsive with a smoother and more powerful drive and increased MPG.

Having the full backing of Viezu remapping we are committed to offering you a professional product with all the necessary back up to ensure that your engine remapping experience will be rewarding and satisfying.

Read more about our VAG High Performance Injectors & Viezu Remapping and Tuning Services →

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Proud to be awarded the UK FLAG distributor of specialised diesel engine parts.

Portex specialises in the field of diesel injection technology. It registered its own brand worldwide under the name FLAG, a brand that quickly became established on the independent aftermarket and one which still continues to stand for reliability, quality, service and innovation all over the world.

With the retirement of Mike Wager of M.W. Services we are proud to be able to serve the industry as the offical U.K. Flag distributor.