NGK Ignition Coil U1070 User Manual

Product Overview

This NGK Ignition Coil, model U1070 (part number 48307), is an original equipment component designed to provide reliable ignition performance for compatible vehicles. It plays a crucial role in the ignition system by transforming the battery's low voltage into the high voltage required to create a spark at the spark plugs, igniting the fuel-air mixture in the engine's cylinders.

Image: Front view of the NGK Ignition Coil U1070, showing its cylindrical shape and electrical terminals.

Compatibility

This ignition coil is compatible with a range of vehicle models. Please verify that this product is suitable for your specific car using the product search bar or by cross-referencing the part numbers.

Known Compatible Models:

• Ford Fiesta I 1.3 (1976-1983) 49 kW
• Nissan Micra I 1.2 (1982 - 1992) 40 kW
• Nissan Micra I 1.2 (1982 - 1992) 44 kW
• Ford Capri III 2.8 Super Injection (1978 - 1987) 118 kW
• Ford Granada Sedan 2.3 (1977 - 1985) 84 kW
• Ford Capri III 2.8 i Turbo (1978 - 1987) 138 kW
• Ford Granada Sedan 2.8 (1977 - 1985) 99 kW
• Nissan Sunny I Coupe 1.5 (1982-1990) 55 kW
• Ford Granada Sedan 2.8 i (1977 - 1985) 110 kW
• Ford Granada Sedan 2.3 (1977 - 1985) 82 kW

Equivalent References:

• INFINITI: 22462-01E10, 22433-09E10, 22433-01E10, 22433-03A10
• NISSAN: 22433-01E10, 22433-03A10, 22433-09E10, 22462-01E10
• Ford: 6048698, 78GB-12024-AA
• Bosch: 0 221 122 017, 0 221 122 015, 0 221 122 009
• BOUGICORD: 155 340
• BREMI: 11 810
• FACET: 9.6073, KW 470 173, EPS 1.970.173

Specifications

Image: The NGK Ignition Coil U1070 shown alongside its product packaging, which displays various other ignition components.

Setup and Installation

Installation of an ignition coil typically requires basic automotive knowledge and tools. It is recommended to consult a professional mechanic if you are unsure about the procedure.

General Installation Steps:

1. Safety First: Ensure the vehicle's engine is off and cool. Disconnect the negative terminal of the battery to prevent electrical shocks.
2. Locate the Coil: Identify the existing ignition coil(s) in your vehicle. Their location varies by vehicle model.
3. Disconnect Wiring: Carefully disconnect the electrical connector(s) and any spark plug wires or coil boots attached to the old coil. Note their positions for reinstallation.
4. Remove Old Coil: Unscrew or unbolt the old ignition coil from its mounting bracket.
5. Install New Coil: Position the new NGK ignition coil (model U1070) in place and secure it with the mounting screws/bolts. Ensure it is firmly seated.
6. Reconnect Wiring: Reconnect the electrical connector(s) and spark plug wires/coil boots to the new coil. Ensure all connections are secure and correctly oriented.
7. Reconnect Battery: Reconnect the negative terminal of the battery.
8. Test: Start the vehicle and check for proper engine operation.

Always refer to your vehicle's specific service manual for detailed, model-specific installation instructions and torque specifications.

Image: A person's hands holding an ignition coil, with an engine bay visible in the background, illustrating the context of installation.

Operating Principles

The ignition coil is a vital component of the ignition system in internal combustion engines. Its primary function is to generate a high-voltage electrical pulse from the vehicle's low-voltage electrical system (typically 12V).

How it Works:

• Primary Winding: When the ignition switch is turned on, current flows from the battery through the coil's primary winding, creating a magnetic field.
• Field Collapse: The engine control unit (ECU) or ignition module rapidly interrupts the current flow to the primary winding. This causes the magnetic field to collapse suddenly.
• Secondary Winding: The collapsing magnetic field induces a very high voltage (tens of thousands of volts) in the coil's secondary winding.
• Spark Generation: This high voltage is then directed to the spark plugs, creating a powerful spark that ignites the fuel-air mixture in the engine cylinders, driving the engine's combustion cycle.

Proper operation of the ignition coil ensures efficient combustion, optimal engine performance, and reduced emissions.

Image: An artistic representation showing two types of ignition coils with red wavy lines symbolizing electrical current or energy flow.

Maintenance

Ignition coils are generally robust components designed for long service life. However, certain factors can affect their longevity and performance.

Maintenance Tips:

• Regular Spark Plug Checks: Worn or fouled spark plugs can put extra strain on the ignition coil, leading to premature failure. Replace spark plugs according to your vehicle manufacturer's recommendations.
• Inspect Wiring: Periodically check the electrical connectors and wiring leading to the ignition coil for signs of corrosion, fraying, or damage. Ensure connections are tight.
• Keep Clean: While coils are sealed, excessive dirt or moisture buildup around them can sometimes lead to issues. Keep the engine bay reasonably clean.
• Avoid Overheating: Ensure the engine cooling system is functioning correctly, as excessive under-hood temperatures can degrade coil components over time.
• Professional Inspection: During routine vehicle servicing, ask your mechanic to inspect ignition system components, including the coil.

Proper maintenance of related ignition components can significantly extend the life of your NGK ignition coil.

Troubleshooting

If you experience issues with your vehicle's ignition system, a faulty ignition coil could be a cause. Here are common symptoms and potential solutions:

Common Symptoms of a Failing Ignition Coil:

• Engine Misfires: The engine may run rough, stumble, or hesitate, especially under acceleration.
• Reduced Fuel Economy: Inefficient combustion due to a weak spark can lead to increased fuel consumption.
• Check Engine Light: The vehicle's onboard diagnostic (OBD-II) system may trigger a "Check Engine" light with specific trouble codes (e.g., P0301-P0308 for misfires).
• Rough Idling: The engine may vibrate or shake noticeably when idling.
• Difficulty Starting: A weak or absent spark can make the engine hard to start or prevent it from starting altogether.
• Loss of Power: The vehicle may feel sluggish and lack acceleration.

Troubleshooting Steps:

1. Check for Diagnostic Trouble Codes (DTCs): Use an OBD-II scanner to retrieve any stored codes. These codes can pinpoint specific cylinders experiencing misfires, indicating a potential coil issue.
2. Visual Inspection: Look for any visible damage to the coil, such as cracks, burn marks, or corrosion on the terminals.
3. Resistance Test: If you have a multimeter and the vehicle's service manual, you can test the primary and secondary winding resistance of the coil. Compare readings to specifications.
4. Swap Test (for multiple coils): If your vehicle has individual coils for each cylinder, you can swap a suspected faulty coil with a known good one from another cylinder. If the misfire moves to the new cylinder, the coil is likely bad.
5. Professional Diagnosis: If you are unable to diagnose the issue, it is best to consult a qualified mechanic.

Always address ignition system issues promptly to prevent further damage to your engine or catalytic converter.

Image: A close-up view of an NGK ignition coil next to its branded packaging, indicating a new replacement part.

Warranty and Support

NGK products are manufactured to high standards and are designed for durability and performance. For specific warranty information regarding your NGK Ignition Coil U1070 (model 48307), please refer to the documentation included with your purchase or visit the official NGK website.

For technical support, installation queries, or warranty claims, please contact NGK customer service or your authorized NGK dealer. Ensure you have your product model number (48307) and purchase details available when contacting support.

Image: The Niterra logo, accompanied by the NGK Ignition Parts and NTK Vehicle Electronics logos, representing the brand's scope.