Engine & fuel system
3 documented faults — symptoms, causes and workshop fixes.
Engine cuts out intermittently
Symptoms
Intermittent power loss. Poor cold starting.
Cause
Fuel pressure regulator control solenoid faulty.
Repair
- Fit new fuel pressure regulator control solenoid.
Parts1 part
| Part | Part number | Qty |
|---|---|---|
| Fuel pressure regulator control solenoid (Denso) | 294009-0120 | 1 |
Data: Motorwise Workshop. Bulletin 1.
Engine oil leak
Overview
- Affects
- All models with MZR-CD (RF-Turbo) engine code.
- Remedy
- Fit modified part
Symptoms
Excessive oil consumption.
Cause
Oil seal between fuel injector and cylinder head cover detached.
Repair
- Fit modified cylinder head cover.
- Top up engine oil to correct level.
Data: Motorwise Workshop. Bulletin 2.
Excessive oil consumption
Poor sealing of fuel injectors allowing blow-by gas ingress into engine oil. Fix: fit a new part.
Overview
- Affects
- All models with MZR-CD (RF-Turbo) engine code.
- Remedy
- Fit new part
Symptoms
Carbon deposit build up in engine.
Repair steps
- Remove fuel injectors. Thoroughly clean all mating surfaces.
- Fit new copper washer to fuel injector.
- Install fuel injectors. Ensure fuel injector retaining bolt tightened to correct torque setting.
- Flush engine oil system with a suitable flushing oil.
- Change engine oil and filter.
Data: Motorwise Workshop. Bulletin 3.
Glossary
Technical terms used in this guide.
- Solenoid
- An electrically operated valve or actuator
- Oil Seal
- A rubber seal that keeps oil in and dirt out, typically around a rotating shaft
Frequently asked questions
What are the common faults with the Mazda MPV 2.0 Turbo?
This guide contains three workshop bulletins for the Mazda MPV 2.0 Turbo. Of these, three concern the engine and fuel system. Symptoms, causes, repair steps and part numbers are shown where supplied.
Does every Mazda MPV 2.0 Turbo have these faults?
No. These are patterns documented across the model by workshops, not predictions for an individual vehicle. Where a fault applies only to certain vehicles or VIN ranges, that is listed with the fault.
Can I check for Mazda MPV 2.0 Turbo faults myself?
Many of them. The documented symptoms can be seen, heard or felt during a test drive.