Professional Motor Mechanic

How to diagnose diesel vehicles

|Date: July 14, 2025

How to diagnose diesel vehicles

Despite their impending demise, diesel vehicles will become more complex in the next five years. Now, rep ...

Despite their impending demise, diesel vehicles will become more complex in the next five years. Now, replacing a failed component is no longer the end of the job, says Iain Molloy, managing director ...

July 14, 2025
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MS Motorservice expands emission-control range

|Date: December 12, 2024

MS Motorservice expands emission-control range

MS Motorservice has expanded its range of emission-control products by adding 14 particle filter injectio ...

MS Motorservice has expanded its range of emission-control products by adding 14 particle filter injection units to its portfolio. Injection units are said to be a crucial component for the regenerati ...

December 12, 2024
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The role of fuel vapour valves

|Date: April 11, 2023

The role of fuel vapour valves

SMP Europe’s Engineering Director, John Wass, delves deeper into the role of fuel vapour valves, why and ...

SMP Europe’s Engineering Director, John Wass, delves deeper into the role of fuel vapour valves, why and how they fail, and gives tips on replacement. A relatively new component, a fuel vapour valve ( ...

April 11, 2023
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Liqui Moly tackles clogged DPFs

|Date: November 03, 2022

Liqui Moly tackles clogged DPFs

In this series of articles, Liqui Moly investigates common vehicle problems and proposes a solution. Prob ...

In this series of articles, Liqui Moly investigates common vehicle problems and proposes a solution. Problem: Clogged DPFs Solution: Liqui Moly’s DPF Cleaning Kit Assessment: Diesel vehicles that are ...

November 03, 2022
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DPF Doctor tackles a Ford Transit custom

|Date: April 13, 2022

DPF Doctor tackles a Ford Transit custom

DPF Doctor Barry Lawson, from Ewan Lawson Motors is back! This month, he is tackling a 2.2l Ford Transit ...

DPF Doctor Barry Lawson, from Ewan Lawson Motors is back! This month, he is tackling a 2.2l Ford Transit Custom with 145k miles on the clock. Vehicle information: 2.2l Ford Transit Custom – 145,000 mi ...

April 13, 2022
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How to deal with DPF problems

|Date: February 24, 2022

How to deal with DPF problems

JLM Lubricants turns to Darren Darling's DPF Doctor network to explain why workshops need to avoid forced ...

JLM Lubricants turns to Darren Darling's DPF Doctor network to explain why workshops need to avoid forced DPF regenerations. Get Darren Darling, founder of The DPF Doctor Network, on the subject of DP ...

February 24, 2022
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DPF Doctor member offers time saving advice

|Date: August 30, 2021

DPF Doctor member offers time saving advice

In this month’s DPF Doctor’s Surgery, Barry Lawson of Ewan Lawson Motors explains how a thorough inspecti ...

In this month’s DPF Doctor’s Surgery, Barry Lawson of Ewan Lawson Motors explains how a thorough inspection recently saved his time and the client’s money. Vehicle information: 2013 Mercedes Benz CLS2 ...

August 30, 2021
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DPF Doctor’s Surgery outlines two case studies

|Date: May 28, 2021

DPF Doctor’s Surgery outlines two case studies

In this month’s DPF Doctor’s Surgery, we hear how Alan Landal of A&J Fleetcare in Leeds puts his DPF ...

In this month’s DPF Doctor’s Surgery, we hear how Alan Landal of A&J Fleetcare in Leeds puts his DPF training to good use with two vehicle case studies. I can’t start this month’s case study witho ...

May 28, 2021
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Maintaining Mitsubishi 4D56 diesel engines

|Date: April 26, 2021

Maintaining Mitsubishi 4D56 diesel engines

The technical team at Gates explains why technicians should be vigilant when approaching maintenance on M ...

The technical team at Gates explains why technicians should be vigilant when approaching maintenance on Mitsubishi 4D56 diesel engines. Vehicle information Engine: Mitsubishi 4D56 Model: Mitsubishi L2 ...

April 26, 2021
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DPF Doctor tackles ex-Royal Mail Fiat Doblo

|Date: March 16, 2021

DPF Doctor tackles ex-Royal Mail Fiat Doblo

In this month’s DPF Doctor’s Surgery, we welcome a new columnist: Tom Bracken of DPF Doctor East Manchest ...

In this month’s DPF Doctor’s Surgery, we welcome a new columnist: Tom Bracken of DPF Doctor East Manchester. Here, Tom and his team are confronted with an ex-Royal Mail Fiat Doblo. Vehicle information ...

March 16, 2021
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DPF Doctor dives into a DPF clean

|Date: November 10, 2020

DPF Doctor dives into a DPF clean

In this month's surgery, DPF Doctor Barry Lawson of Ewan Lawson Motors demonstrates the importance of a t ...

In this month's surgery, DPF Doctor Barry Lawson of Ewan Lawson Motors demonstrates the importance of a thorough vehicle assessment before diving into a DPF clean. Vehicle information: 2011 Mazda 3 2. ...

November 10, 2020
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Causes of DPF failure and how to perform a ‘regeneration’

|Date: December 16, 2015

Causes of DPF failure and how to perform a ‘regeneration’

Last year, on my visits to various customers, I made enquiries about the general demand for Diesel Partic ...

Last year, on my visits to various customers, I made enquiries about the general demand for Diesel Particulate Filters. I was staggered at the lack of DPF knowledge, especially the procedure regarding ...

December 16, 2015
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Is the GDi as good as it sounds?

|Date: October 31, 2015

Is the GDi as good as it sounds?

The success of GDi (Gasoline Direct Injection) engines means that they’re seen as potential replacements ...

The success of GDi (Gasoline Direct Injection) engines means that they’re seen as potential replacements for diesel engines in the small car market. But is it too good to be true? Well, it seems that ...

October 31, 2015
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How to perform a common rail injector function test

|Date: October 09, 2015

How to perform a common rail injector function test

1. SIMPLE SETUP ...

1. SIMPLE SETUP ...

October 09, 2015
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Why mechanical testing is just as important as electronic

|Date: September 22, 2015

Why mechanical testing is just as important as electronic

In opinion of Feather Diesel, many garages continue to fail when diagnosing faults because they’re not me ...

In opinion of Feather Diesel, many garages continue to fail when diagnosing faults because they’re not mechanically testing the systems they’re investigating. ...

September 22, 2015
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