Diesel injection specialist
Diesel pump repair specialists: fast, accurate, local in Auckland
Restore power, reliability and fuel efficiency with precision diesel pump diagnostics, rebuilds and calibration. Simms Diesel services fleets, workshops, marine, agricultural and industrial engines across Auckland and Northland.
Why choose Simms for diesel pump repair
Established diesel experts
Trusted diesel injection specialists serving Auckland and Northland for decades.
Advanced calibration & testing
Specialist bench testing and calibration equipment ensures every pump is rebuilt and set to specification.
Fleet & commercial focused
We understand downtime costs money. Our structured repair process keeps your trucks and machinery moving.
Quality parts & workmanship
We use quality components and verify every repair through testing before it leaves our workshop.
Losing power? Burning more fuel than usual?
Diesel pump faults often appear as starting issues, excessive smoke, low power or inconsistent performance under load. If you're experiencing any of the following, a proper bench test can identify the root cause before unnecessary parts are replaced.
Common signs your diesel pump may need inspection:
- Hard start / no start (even with good fuel supply)
- Loss of power, poor throttle response
- Excessive smoke (black / white) under load
- Rough idle, surging, or intermittent cut-outs
- Poor fuel economy and increased operating cost
Request a diesel pump assessment
- Typical response time: same business day
- NO-OBLIGATION assessment
- Experienced diesel technicians
- Auckland workshop
Tell us your engine, pump type and symptoms — we’ll recommend the most cost-effective solution based on proper testing.
Frequently asked questions
Clear answers to common questions about diesel pump diagnostics, repair, exchange options and workshop turnaround.
09 579 1159How long does diesel pump repair take?
Most diesel pump repairs are completed within 2–4 working days, depending on pump type, parts availability and testing requirements. We confirm timing after bench diagnosis.
Can I courier my pump in?
Yes — courier-in repairs are common. Pack the parts securely and include your contact details along with notes describing the symptoms or performance issues.
Do you offer exchange pump options?
In some cases, exchange units are available if repair is not cost-effective. After inspection and testing, we’ll recommend the best-value solution.
Where is your workshop?
You’re welcome to visit our Auckland workshop and showroom at:
77 Leonard Road, Penrose, Auckland 1060
We also support courier repairs nationwide.
Do you diagnose before repairing?
Yes. Every pump is bench-tested to confirm faults before any repair work begins. This ensures accurate diagnosis and prevents unnecessary part replacement.
What brands do you service?
We service a wide range of diesel injection systems. Contact us with your pump or engine details and we’ll confirm compatibility.
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