Main points
- The glow plugs are typically located on the cylinder head, near the top of the engine.
- Using a wire brush or compressed air, clean the threads of the glow plug holes in the cylinder head.
- Start the engine and let it run for a few minutes to ensure the new glow plugs are working properly.
Are you experiencing trouble starting your Vauxhall Vivaro in cold weather? A common culprit is faulty glow plugs. This blog post will guide you through the process of how to change glow plugs Vauxhall Vivaro, allowing you to tackle this essential maintenance task yourself and save some money.
Understanding Glow Plugs and Their Importance
Glow plugs are essential components in diesel engines, particularly in cold climates. They work by heating up the combustion chamber before the engine starts, making it easier to ignite the fuel. When glow plugs fail, your Vivaro might struggle to start, especially in cold weather, or even refuse to start at all.
Identifying Symptoms of Faulty Glow Plugs
Before diving into the replacement process, it’s crucial to identify the signs of a failing glow plug:
- Difficult Starting: The engine takes longer than usual to start, especially in cold weather.
- Hesitation or Rough Idle: The engine might hesitate or run roughly after starting.
- Increased Emissions: You might notice an increase in exhaust smoke, particularly during cold starts.
- Glow Plug Warning Light: The dashboard warning light for the glow plugs might illuminate.
Gathering the Necessary Tools and Materials
Before you begin, ensure you have the following tools and materials:
- New Glow Plugs: Purchase the correct glow plugs for your Vauxhall Vivaro model year.
- Torque Wrench: This is essential for tightening the glow plugs to the correct specifications.
- Socket Set: You’ll need a socket that fits the glow plugs.
- Breaker Bar: This will provide extra leverage for loosening the glow plugs.
- Penetrating Fluid: This can help loosen stubborn glow plugs.
- Gloves: Protect your hands from grease and heat.
- Safety Glasses: Shield your eyes from potential debris.
- Work Space: Find a clean and well-lit area to work on your Vivaro.
Accessing the Glow Plugs
1. Locate the Glow Plugs: The glow plugs are typically located on the cylinder head, near the top of the engine. You can usually identify them by their cylindrical shape and electrical connector.
2. Disconnect the Battery: For safety, disconnect the negative terminal of the battery before working on the electrical system.
3. Remove Air Intake: Remove the air intake hose to gain better access to the glow plugs.
Removing the Old Glow Plugs
1. Loosen the Glow Plugs: Use the socket and breaker bar to loosen the glow plugs. Be careful not to damage the surrounding components.
2. Apply Penetrating Fluid: If the glow plugs are stubborn, apply penetrating fluid to help loosen them.
3. Remove the Glow Plugs: Once the glow plugs are loose, carefully remove them from the cylinder head.
Installing the New Glow Plugs
1. Clean the Threads: Using a wire brush or compressed air, clean the threads of the glow plug holes in the cylinder head.
2. Install the New Glow Plugs: Screw the new glow plugs into the cylinder head, ensuring they are seated properly.
3. Tighten the Glow Plugs: Use the torque wrench to tighten the glow plugs to the manufacturer’s specifications. Overtightening can damage the glow plugs or cylinder head.
Reconnecting and Testing
1. Reconnect the Air Intake: Reinstall the air intake hose.
2. Reconnect the Battery: Reconnect the negative terminal of the battery.
3. Start the Engine: Start the engine and let it run for a few minutes to ensure the new glow plugs are working properly.
Wrapping Up: A Job Well Done!
Congratulations! You’ve successfully replaced the glow plugs in your Vauxhall Vivaro. By following these steps, you’ve saved yourself some money and gained valuable DIY experience.
Questions You May Have
Q: What are the signs of a faulty glow plug?
A: Common signs include difficult starting, hesitation or rough idle, increased emissions, and a glow plug warning light on the dashboard.
Q: How often should I change my glow plugs?
A: Glow plugs typically last between 60,000 and 100,000 miles, but it’s best to consult your owner’s manual for specific recommendations for your Vauxhall Vivaro model.
Q: Can I replace just one glow plug?
A: It’s generally recommended to replace all glow plugs at the same time, even if only one is faulty. This ensures that all glow plugs are working at the same efficiency level.
Q: Is it safe to change glow plugs on my own?
A: While it’s possible to change glow plugs yourself, it’s important to be comfortable working with tools and have a basic understanding of engine mechanics. If you’re unsure, it’s always best to consult a qualified mechanic.