CAT pump and injector repair
Caterpillar fuel injection pump and injector repairs, testing and calibration in our Auckland workshop, for CAT engines in trucks, machinery, marine and industrial equipment. Courier-in repairs from anywhere in New Zealand.
Why Simms for CAT repair
- 01CAT fuel system specialists
Caterpillar fuel injection systems, pumps and injectors, repaired and calibrated correctly.
- 02Bench tested and calibrated
Every CAT pump and injector is rebuilt to manufacturer specification and verified on specialist test equipment.
- 03Built around downtime
For transport, contractors, marine and earthmoving fleets: diagnose, repair and return as quickly as possible.
- 04Tested before it leaves
Every repair is tested and inspected for performance and reliability.
Hard starting, smoke or losing power?
These usually come from worn injectors, incorrect calibration, contaminated fuel or internal pump wear. Bench testing finds the cause before parts are replaced.
Common signs your CAT fuel system needs testing
- Hard starting or no start
- Loss of power or poor throttle response
- Black or white smoke under load
- Rough idle, surging or cutting out
- Higher fuel use
- Uneven running or misfiring
- Lack of power when towing or under load
Request a CAT injector or pump repair
Tell us the Caterpillar engine model, injector or pump type and symptoms. We'll recommend the most cost-effective repair after testing, and usually reply within one working day.
CAT repair questions
Another question? Call +64 9 579 1159.
How long does CAT injector or pump repair take?
It depends on the pump or injector and parts availability. Most testing and repairs take a few working days once the parts reach us. We confirm timing after inspection.
Can I courier my CAT injectors or pump in?
Yes. Customers courier Caterpillar injectors and pumps to us from around New Zealand. Include your contact details, engine model and a description of the fault.
Do you offer exchange CAT pumps or injectors?
For some models, depending on availability. An exchange unit, rebuilt and calibrated, can cut downtime.
Do you test before repairing?
Yes. Every Caterpillar injector and pump is tested before any repair work, and we quote before going ahead.
What CAT equipment do you work on?
Caterpillar fuel systems in trucks, earthmoving and construction machinery, generators, marine and industrial engines.
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.