How to Choose a Common Rail Test Bench
Common rail fuel injection systems require specialized test equipment. A test bench is a significant investment ($10,000-$100,000+), so choosing the right one is critical.
What Does a CR Test Bench Do?
- Tests common rail injectors (solenoid and piezo)
- Tests high-pressure CR pumps
- Measures injection quantity, timing, and pattern
- Codes injectors after service
- Tests at actual operating pressures (up to 2,000+ bar)
Key Features to Compare
- Pressure capability: Minimum 2,000 bar for modern injectors, 2,500+ for latest piezo systems
- Number of channels: 6-channel for efficiency (test multiple injectors simultaneously)
- Supported injector types: Bosch, Delphi, Denso, Siemens/VDO, CRIN, piezo
- Pump testing: Integrated CP1, CP3, CP4, HP3, HP4 pump test capability
- Software: Test plan database, automatic pass/fail, report generation
- Coding: Ability to generate IMA/C2I/C3I correction codes
Top Options by Budget
Premium: Bosch EPS 815 (~$18,000-25,000)
The industry standard. If you can afford it, this is the safest investment.
- All Bosch CR injectors and pumps
- 6-channel testing
- Automatic test plans with Bosch database
- Industry-recognized certification
Mid-Range: Hartridge AVM2-PC (~$12,000-18,000)
British engineering with excellent Delphi and Denso coverage.
- Strong multi-brand support
- Good software with test plan library
- Solid build quality
Entry: Chinese-manufactured benches (~$5,000-10,000)
Brands like CRS-708, EUI EUP testers.
- Lower cost of entry
- Adequate for basic testing
- May lack latest piezo injector support
- Software updates less frequent
ROI Calculation
| Factor | Without Test Bench | With Test Bench |
|---|---|---|
| Injector diagnosis | Send out ($200-400/set) | In-house ($50/set) |
| Turnaround time | 3-7 days | Same day |
| Revenue per job | $500 | $800-1,200 |
| Monthly injector jobs | 5-10 | 15-25 (attract more work) |
Typical payback period: 12-24 months for a busy diesel shop.
Need help choosing? Contact our team for personalized recommendations based on your shop's volume and vehicle mix.
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