Diesel injection pump repair
Restore power, reliability and fuel economy with diesel pump diagnosis, rebuilds and calibration in our Auckland workshop. For fleets, workshops, marine, agricultural and industrial engines, with courier-in repairs from anywhere in New Zealand.
Why Simms for diesel pump repair
- 01Diesel injection specialists
In business since 1927.
- 02Tested and calibrated
Bench testing and calibration equipment sets every pump to specification.
- 03Built around downtime
A structured repair process to get trucks and machinery moving again.
- 04Quality parts and workmanship
Every repair is tested before it leaves the workshop.
Losing power or burning more fuel?
Diesel pump faults often show up as starting problems, smoke, low power or uneven running under load. A bench test finds the cause before parts are replaced unnecessarily.
Common signs your pump needs checking
- Hard start or no start, even with good fuel supply
- Loss of power or poor throttle response
- Black or white smoke under load
- Rough idle, surging or cutting out
- Higher fuel use than usual
Request a diesel pump assessment
Tell us the engine, pump type and symptoms. We'll recommend the most cost-effective fix after testing, and usually reply within one working day.
Diesel injection pump repair questions
Another question? Call +64 9 579 1159.
How long does a diesel pump repair take?
Most repairs take 2–4 working days, depending on the pump, parts availability and testing. We confirm timing after we've inspected the pump.
Can I courier my pump in?
Yes. Pack it securely and include your contact details and a note on the symptoms.
Do you offer exchange pumps?
In some cases, if a repair isn't cost-effective. After inspecting the pump we'll recommend the best-value option.
Do you check the pump before repairing?
Yes. We inspect your pump and advise on the best option before any repair work starts.
What brands do you service?
A wide range of diesel injection systems. Send us your pump or engine details and we'll confirm.
Where is the workshop?
77 Leonard Road, Mount Wellington, Auckland 1060. Monday to Friday, 8am to 5:30pm.
Other workshop services
Need a part as well?
We hold far more diesel parts than we list online. If we don't have it, we can usually source it.