294000-0420 294000-0422 294000-0424 Diesel Fuel Injection Pump for Mazda RF-DI RF7J Diesel Engine
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Product Name
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Common Rail Diesel Fuel Injection Pump
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Place of Origin
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Wuhan,China
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Warranty
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6 Months
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Delivery time
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3-5 Days, subject to the order quantity
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Quality
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100% Tested
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Packing
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Customer Requirement
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Service
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After-Sales Service
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Size
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Standard Size
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Payment
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TT,Trade Assurance,PayPal,Credit Card
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Advantage
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Perfect Fit
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???? Compatible Vehicles
This fuel injection pump is primarily used in Mazda diesel vehicles:
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Mazda 5 (2.0 MZR-CD / DiTD)
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Mazda 6 (2.0 MZR-CD / DiTD)
⚙️ Engine Application
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Mazda RF-DI / RF7J (2.0L Common Rail Diesel Engine)
Company Info
Wuhan Jinhong Auto Parts Co., Ltd. is a manufacturer and exporter of common rail fuel injectors integrating manufacturing,processing and R & D.
Our factory has a complete and scientific management system and professional product development team, products have been advancing with The Times, quality is also constantly improving, product quality and service have been widely recognized by the industry. Our company has its own factory, combined with the sales model of trade factory, we can provide customers with a full range of services. In addition, our company has international logistics partners to reduce transportation costs for customers. Our company is a leading manufacturer and supplier of Marine parts and auto parts in China. At the same time, we have established partnerships with hundreds of factories specializing in the production of various high-quality auto parts.
Our goal is to provide the best service at the best price, your satisfaction is our best return. Look forward to working with you. Welcome friends from all walks of life to visit, guidance and business negotiations.
1. Vehicle Symptoms (Vehicle Performance)
If the fuel pump is failing or completely dead, you will usually experience one or more of these common symptoms:
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Hard Start / No Start: The engine cranks for a long time before catching, or fails to start at all (especially when hot). This happens because the pump cannot build up enough initial pressure to fire the injectors.
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Limp Mode / Sudden Engine Stall: The car suddenly loses power while driving or cuts out entirely under acceleration due to a drop in rail pressure.
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Black/White Smoke: Insufficient or unstable fuel pressure leads to poor fuel atomization, causing incomplete combustion.
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Rough Idle / Engine Hunting: The engine RPM surges and drops unevenly at idle.
2Professional Bench Testing (The Final Verdict)
If the on-car diagnostics are inconclusive, the pump must be removed and tested on a dedicated Common Rail Test Bench (e.g., Bos-ch EPS or equivalent diesel simulation bench). The bench will run specific test plans to measure:
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High-Pressure Output: Verification that it can reach max working pressures (up to $1600+text{ bar}$).
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Delivery Flow Rate: Measuring if it pumps enough volume of fuel per minute under full engine load.
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Return/Back Leakage Volume: High internal return flow indicates worn internal plungers or seals.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.