What is the problem with the glow plugs on the 6.7 Powerstroke?
The 6.7 Powerstroke engine, a popular choice for heavy-duty trucks, is known for its power and reliability. However, like any engine, it has its quirks, and one of the most frequently discussed issues involves the glow plugs. Glow plugs are essential for starting diesel engines in cold weather, and when they malfunction, it can lead to a host of problems. In this article, we’ll explore the common issues with glow plugs on the 6.7 Powerstroke and what you can do to address them.
What Are Glow Plugs and Why Are They Important?
Glow plugs are heating elements designed to warm the combustion chambers of diesel engines, making it easier to start the engine in cold conditions. Unlike gasoline engines, diesel engines rely on compression to ignite the fuel, and cold temperatures can make this process more difficult. Glow plugs ensure that the engine starts smoothly, even in freezing weather.
Common Problems with Glow Plugs on the 6.7 Powerstroke
While the 6.7 Powerstroke is a robust engine, its glow plug system can experience several issues over time. Here are the most common problems:
- Glow Plug Failure: Over time, glow plugs can wear out or fail due to repeated heating and cooling cycles. When this happens, the engine may struggle to start, especially in cold weather.
- Glow Plug Module Malfunction: The glow plug control module is responsible for managing the operation of the glow plugs. If the module fails, it can prevent the glow plugs from functioning properly, leading to starting issues.
- Electrical Issues: Faulty wiring or poor connections in the glow plug circuit can disrupt the flow of electricity, causing the glow plugs to underperform or stop working altogether.
- Carbon Build-Up: Over time, carbon deposits can accumulate around the glow plugs, reducing their effectiveness and potentially causing them to seize in the cylinder head.
Symptoms of Glow Plug Problems
If your 6.7 Powerstroke is experiencing glow plug issues, you may notice the following symptoms:
- Difficulty starting the engine, particularly in cold weather.
- Excessive white smoke from the exhaust during startup.
- Rough idling or misfiring immediately after starting.
- Check engine light illuminated on the dashboard.
How to Address Glow Plug Issues
If you suspect a problem with your glow plugs, it’s important to address it promptly to avoid further damage to your engine. Here are some steps you can take:
- Inspect and Replace Glow Plugs: If one or more glow plugs have failed, they should be replaced. It’s often recommended to replace all glow plugs at the same time to ensure consistent performance.
- Check the Glow Plug Module: If the module is malfunctioning, it may need to be repaired or replaced. A diagnostic scan can help identify issues with the module.
- Examine Wiring and Connections: Inspect the wiring and connections in the glow plug circuit for signs of damage or corrosion. Repair or replace any faulty components.
- Clean Carbon Deposits: If carbon build-up is causing problems, the glow plugs and surrounding areas may need to be cleaned. In severe cases, professional assistance may be required to safely remove seized glow plugs.
Preventing Future Glow Plug Problems
To minimize the risk of glow plug issues in the future, consider the following tips:
- Perform regular maintenance on your 6.7 Powerstroke, including inspecting the glow plug system during routine check-ups.
- Use high-quality diesel fuel and additives to reduce carbon build-up in the engine.
- Address any starting issues promptly to prevent further damage to the glow plug system.
Conclusion
Glow plug problems on the 6.7 Powerstroke can be frustrating, but they are manageable with proper maintenance and timely repairs. If you’re experiencing issues with your glow plugs, don’t hesitate to reach out to a trusted auto repair professional. At Kevin’s Autos, we have years of experience diagnosing and repairing diesel engines, including the 6.7 Powerstroke. Contact us today to schedule an appointment and get your truck back on the road!
Frequently Asked Questions
What is the most common problem with the 6.7 power stroke?
Navigating the Challenges of the Ford 6.7 Powerstroke
Today, we'll dive into three of most common issues owners may face: Cold Side Charge Pipe Failure, CP4 Injection Pump Failure, and Filtration problems.
What are the symptoms of bad glow plugs?
A complete failure of the glowplug system will cause a hard start or no start condition especially in cooler weather. A partial failure will usually result in a rough start with a lot of shaking and possibly white smoke until the engine smooths out and is firing on all cylinders.
What causes diesel glow plugs to fail?
Common reasons why glow plugs fail include:
Excessive carbon build up in your pre chambers. Folds and dents on the rod of the glow plug. Snapped or damaged tip of the glow plug. Excessive heat reaching the glow plug.
What year does 6.7 have a bad turbo?
What year does 6.7 have a bad turbo? The first-generation 6.7 Powerstroke models released from 2011 to 2014 are usually associated with turbocharger issues.
How much does it cost to replace diesel glow plugs?
Glow plug are not one of the most expensive part. You can get a set of 6 or 8 (Depending on engine) at a price varying from $30 to $200. (That, unless you have an exotic Diesel). On most North-American truck, you can get them replaced by a mechanic for $100 to $200.
What year of 6.7 power stroke to avoid?
Issues with the Ford 6.7-liter Power Stroke are most pronounced in the first generation (2011-2014), but some problems have transcended generations. The injection pump could be trouble in pre-2020 engines.
What is the most unreliable Power Stroke engine?
The 6.4 Powerstroke came after the 6.0 Powerstroke, which was widely panned for its problems and poor performance.
Can you drive a diesel with a bad glow plug?
Driving With a Bad Glow Plug
You can drive with a bad glow plug if you have to. But the drive should be short and should take you to the mechanic's shop. Driving on a faulty glow plug will result in continued poor performance. Eventually, your engine will misfire.
What is the life expectancy of a 6.7 Power Stroke?
200,000 to 300,000 miles
How Long Will It Last? With proper care, many truck owners report that their deleted 6.7 Powerstroke engines last 200,000 to 300,000 miles or more. However, neglecting maintenance or using poor-quality delete kits can shorten the engine's lifespan.
How often should I change the glow plugs in diesel?
around 100,000 miles
Glow plugs do typically have a long lifespan, but over time they will naturally degrade due to wear and tear, and even faster in cold weather. On average, you can expect your glow plugs to last around 100,000 miles. So, you don't need to worry about replacing them too often.
