HGV, COACH, PLANT & MACHINERY DIESEL INJECTOR TESTING & REPAIR
Keeping HGVs, coaches, construction plant and heavy machinery running efficiently starts with well-maintained injectors. Faulty injectors reduce performance, increase fuel costs and cause emissions failures and downtime.
SPECIALISTS IN COMMERCIAL & HEAVY-DUTY DIESEL INJECTORS
Based in Walsall, we test, repair and recondition injectors for HGVs, coaches, PCVs, construction machinery, agricultural equipment and industrial diesel systems. Whether you operate a single truck or a nationwide fleet, we deliver accurate testing, OEM-standard repairs and fast turnaround to minimise downtime and keep your operation moving.
- HGVs & trucks
- Coaches & PCVs
- Construction plant & site machinery
- Industrial and off-highway equipment
SIGNS YOUR INJECTORS NEED ATTENTION
Excessive exhaust smoke
Poor fuel economy
Loss of power or pulling
performance
Rough idle or hard
starting
Diesel knock or unusual
noise
Emissions or smoke
test failures
Early injector testing prevents further engine, DPF and turbo damage — and reduces costly downtime.
COMMERCIAL INJECTOR SERVICES
ADVANCED INJECTOR TESTING & CALIBRATION
We use fully computerised test benches designed for HGV, coach and plant injectors. Each injector is tested under controlled speeds and loads so we can measure delivery, spray pattern and leakage accurately. You’ll receive a printed calibration report showing the results and any issues found.
INJECTOR REPAIR & RECONDITIONING
Our OEM-standard reconditioning process includes dismantling, cleaning and replacing worn components before recalibrating the injector on our bench. This restores correct performance, improves fuel efficiency and extends injector life for heavy-duty engines.
FAST REPLACEMENT OPTIONS
If repair isn’t cost-effective, we supply new or reconditioned injectors for quick like-for-like replacement. This helps minimise downtime for HGV fleets, coach operators and plant machinery users who rely on fast turnaround and reliable performance.
DIAGNOSTICS & TECHNICAL SUPPORT
We use specialist diagnostic equipment to identify issues such as over-fuelling, pressure loss, imbalance and internal wear. Our technicians pinpoint the root cause of poor performance or emissions problems and advise the most effective repair solution.
INJECTOR BRANDS & TECHNOLOGIES WE WORK ON
We work with the major injector brands and heavy-duty injection systems used on modern HGVs, buses, coaches and plant machinery.
Injector brands we work on include:
- Bosch
- Delphi
- Denso
- Siemens / Continental
- Cummins
- Caterpillar (CAT)
- Stanadyne
- Other OEM and quality aftermarket brands
Injector types we work on include:
- Common rail diesel injectors
- Electronic unit injectors (EUI)
- Mechanical and electronic unit pump systems
- Piezoelectric injectors
- HEUI and other specialist heavy-duty injector systems
If your injector brand or type is not listed, please contact us – in most cases we can still test, repair or replace it.
HGV, Coach, Plant & Machinery Injectors We Regularly Service
We provide diesel injector testing, calibration, repair and reconditioning for a wide range of HGVs, coaches, plant and industrial machinery. Whether you run a single vehicle or a full fleet, our specialist equipment and expertise help restore performance, reduce running costs and minimise downtime.
HGVs & TRUCKS
- Scania R-Series, P-Series
- Volvo FH12, FH13, FM
- Mercedes Actros, Arocs
- DAF XF, CF, LF
- Iveco Eurocargo, Stralis
- MAN TGX, TGS
- Tippers, grab lorries, tankers, hook loaders
- Renault Magnum
- Distribution & logistics vehicles
COACHES & PCVs
- Touring coaches
- Scheduled service buses
- Private hire coaches
- Contract transport vehicles
PLANT & HEAVY MACHINERY
- Excavators & mini-diggers
- Dumpers & ADTs
- Telehandlers & loaders
- Rollers & compactors
- Generators & industrial plant
- Site machinery & specialist equipment
SERVING WALSALL, THE MIDLANDS & THE UK
We serve Walsall and nearby areas including:
Walsall
Cannock
Wolverhampton
Lichfield
Birmingham
Brownhills
West Bromwich
Aldridge
Dudley
Sutton Coldfield
Sandwell
Nationwide customers
We support operators across Walsall, the West Midlands, the wider Midlands and nationwide. Many HGVs, coaches and plant operators send injectors to us via courier for testing and repair.
Why Choose Midland AutocareWhy Choose Midland Autocare?
At Midland Autocare, we combine dedicated diesel expertise with high-capacity workshop equipment to deliver accurate testing, fast turnaround and reliable results. Our technicians are experienced with major truck, coach and plant injector systems, providing clear reports, dependable repairs and flexible support for operators, garages and fleet customers across the Midlands and the UK.
- Specialist expertise in HGV, coach, plant and machinery injectors
- High-capacity workshop for large commercial injector testing
- Fast turnaround to reduce vehicle and equipment downtime
- Printed test and calibration reports for maintenance records
- Fleet and contract servicing options for regular users
- Experienced technicians familiar with major commercial injector systems
Book your HGV, coach, plant or machinery injector testing today
What our customers are saying
Yesterday was the first time of taking my car to this garage and I was pleased with how fast they did the mot, within 3 hours it was done regardless of other cars being in on the same day as mine. Excellent service and they even helped me with my problem of putting new batteries in both of my key fobs as i was struggling to do them myself due to it being very tricky to remove the casing, I will definately be using them in the future.
Great service kept me informed all the way through. Took van in with misfire. They told me at each stage what was needed, after testing injectors found they were all not very good. They showed me the reports and explained why they all needed to be replaced. My bill was high but this was down to the parts and not the labour. Would use again. Thank you for getting Van up and running Quickly. Thanks you.
Yesterday was the first time of taking my car to this garage and I was pleased with how fast they did the mot, within 3 hours it was done regardless of other cars being in on the same day as mine. Excellent service and they even helped me with my problem of putting new batteries in both of my key fobs as i was struggling to do them myself due to it being very tricky to remove the casing, I will definately be using them in the future.
Opening Hours
Monday – Friday
09:00 – 17:30
Saturday
09:00 – 14:00
Sunday
Bookings Only
