Bosch
CP1 · CP1H · CP3 · CP4
The most widespread in European cars and vans.
[D-02]Pumps
Common rail high-pressure pumps
The pump is the heart of the system: it builds the pressure the injectors work with. When it fails, the car loses power, won’t start or goes into limp mode.
[D-02·A]Models
Pumps we work on
Denso
HP2 · HP3 · HP4
Common in Toyota, Nissan, Mazda, Mitsubishi and Ford.
Delphi
DFP1 · DFP3
Frequent in Renault, Ford, Hyundai and Kia.
Siemens VDO / Continental
VDO pumps
Fitted to Ford and PSA engines, among others.
[D-02·B]Symptoms
Signs the pump is failing
- 01Very hard starting or no start
- 02Stalls while driving or at idle
- 03Loses power and goes into limp mode
- 04Rail pressure fault codes (P0087, P0093…)
- 05Metallic noise or whine around the pump
- 06Metal particles in the fuel filter
Important
If the pump sheds metal, the injectors suffer too
When a high-pressure pump wears internally, it can shed metal particles that travel through the rail into the injectors. Replacing only the pump is not enough: the injectors must be checked and the system cleaned, or the fault comes back.
[D-02·C]Process
How we handle a pump
- 01
Diagnosis
We check pressure, delivery and internal condition, and look for contamination in the system.
- 02
Quote
We tell you whether it gets repaired or replaced and what it costs, with no obligation.
- 03
Repair or replacement
We repair with new parts or, if it doesn’t make sense, offer an alternative.
- 04
Clean system
If needed, we check injectors, rail and return lines so it doesn’t fail again.
[D-02·D]FAQ
What people ask us most
How much does a high-pressure pump repair cost?+
It depends on the model and the internal damage. We diagnose it first and then give you a fixed, no-obligation quote.
Why do high-pressure pumps fail?+
The most common causes are poor-quality diesel, water in the fuel, an overdue filter or wear from mileage. That is why we check the whole system too.
Do you also repair the lift pump?+
Yes. We check the whole fuel system: lift pump, filter, rail, pressure regulators and return lines.
D-01
Common rail injectors
Solenoid and piezo. How we repair them, step by step.
Open sectionD-03
Diagnosis by symptom
Tick what your car is doing and get a pointer in 30 seconds.
Open sectionD-04
Prices
Bench test at €15 per injector. Work out your cost.
Open sectionD-05
For workshops
Pickup with our own fleet and trade pricing.
Open sectionD-06
Injector brands
Bosch, Denso, Delphi and Siemens VDO / Continental.
Open section[→]Next step
Test your injector for €15
Send us the car model and the symptom on WhatsApp. We reply in under 15 minutes.
Reply < 15 min · No call center