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Home > News & Guides

News & Guides

CP4 Pump Failure | United
Nov 3 2022|Guides
Pump Failure Bosch CP4

The application of Bosch CP4 high-pressure pumps to some engines are experiencing costly repairs due to failures resulting in the destruction of the injectors and the contaminating of the complete fuel system. We recommend that should the pump display signs of swarf or metal filings: Remove the pump and injectors and send them to us […]

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VAG 1.6 Pump and Injector Failure | United
Nov 3 2022|Guides
VAG 1.6 lt. Pump and Injector failure. (Delphi System)

We are starting to see pump failures on the VAG 1.4 and 1.6 lt. Engines fitted with a Delphi DFP6.1E high-pressure pump. O.E. part number 04B 130 755H and Delphi part number 28477820. This problem causes the injectors to fail due to swarf contaminating the fuel system. Below are some pictures of the pilot valve […]

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Transit 2.2 TDCI 2006 Starts Then Cuts Out | United
Nov 3 2022|Guides
Transit 2.2 TDCI 2006 > Starts then cuts out

Injector part number 6C1Q-9K546-BB / BC This is the problem of starting but then cutting out even when you try acelerating. No fault codes and no obivious problems. Solution – We tested the injectors and found the start of injection and idle fuel below specifications. The injectors were purged and re-tested and then replaced in […]

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DAF Pump Seal | United Diesel
Apr 18 2020|News
DAF pump drive seal popping out

If the drive seal/seals dislodge or pop out, it is due to an excessive build-up of internal fuel pressure in the high-pressure pump. The cause is either a blockage of the return from the pump to the tank or a problem with the Volume control/M prop. Valve. Check the following. Blocked/restricted return pipe. The return […]

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Diesel Engine Problems | United Diesel
Apr 10 2020|News
Diesel engine problems?

The innovation of the computer-generated fault diagnosis has led us to lose sight of the basic operating principles of the diesel engine. Unfortunately, the fault codes don’t always pinpoint the problem but rather bring up an array of codes that could relate to many problems. We have put together a guide to assist you with faults regarding […]

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Virtual Tour Workshop | United Diesel
Apr 9 2020|News
Welcome to a VIRTUAL TOUR of our workshop

Come in and see what we do and how it gets done, we welcome any feedback and should you have any questions please do not hesitate to contact us.  Find out more about our virtual tour here.

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e: [email protected]

Unit 35 Atcham Business Park
Atcham, Shrewsbury SY4 4UG

Registered company number: 04141539

  • Services
    • Diesel Injector Repairs
    • Euro 6 Common Rail Injector Repair
    • Cat HEUI Injector Repairs
    • Diesel Pump Repairs
    • Turbocharger Repair Service
    • Petrol Injector Repairs
    • DPF/CAT/SCR Cleaning Service
    • Performance Upgrades
  • Industries
    • Agricultural
    • Automotive & Performance
    • Commercial Vehicles
    • Marine
    • Plant
    • Our Network
  • Products
    • Auxiliary Parts
    • Injectors
    • Diesel Rhino Additive
    • Performance Kits
    • Pumps
    • Turbochargers
  • About Us
    • Why Us
    • Our Workshop
    • Our History
    • Meet The Team
    • Careers
    • FAQs
  • News & Guides
  • Contact Us
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