When should the Subaru timing chain be replaced?
The timing chain is a critical component of your Subaru's engine, ensuring that the camshaft and crankshaft are synchronized for optimal performance. Unlike timing belts, timing chains are designed to last much longer, but they are not entirely maintenance-free. In this article, we’ll explore when you should consider replacing the timing chain in your Subaru and what signs to watch for to avoid costly engine damage.
Understanding the Timing Chain's Lifespan
Subaru vehicles equipped with timing chains generally do not have a specific replacement interval, as timing chains are built to last the lifetime of the engine under normal operating conditions. However, this does not mean they are immune to wear and tear. Factors such as high mileage, poor maintenance, or oil-related issues can lead to timing chain problems over time.
Signs That Your Subaru Timing Chain May Need Replacement
While timing chains are durable, there are certain warning signs that indicate it may be time for a replacement. Pay attention to the following:
- Rattling Noise: A rattling or clanking noise from the engine, especially during startup, could indicate a loose or worn timing chain.
- Engine Misfires: If the timing chain is stretched or damaged, it can cause the engine's timing to be off, leading to misfires.
- Check Engine Light: A malfunctioning timing chain can trigger the check engine light, often due to timing-related error codes.
- Oil Contamination: Metal shavings in the oil may indicate that the timing chain or its components are wearing down.
- Poor Engine Performance: A failing timing chain can result in reduced power, rough idling, or difficulty starting the engine.
If you notice any of these symptoms, it’s crucial to have your vehicle inspected by a professional mechanic to prevent further damage to the engine.
Maintenance Tips to Extend Timing Chain Life
Proper maintenance can significantly extend the life of your Subaru's timing chain. Here are some tips to keep it in good condition:
- Regular Oil Changes: Clean and sufficient oil is essential for lubricating the timing chain and preventing premature wear.
- Use High-Quality Oil: Always use the oil grade recommended by Subaru to ensure optimal engine performance.
- Address Engine Issues Promptly: Ignoring problems like oil leaks or unusual noises can lead to timing chain damage.
- Follow Manufacturer Guidelines: Stick to Subaru’s maintenance schedule for inspections and servicing.
By following these maintenance practices, you can help ensure that your timing chain remains in good working condition for as long as possible.
When Replacement Becomes Necessary
Although timing chains are designed to last, there are situations where replacement becomes unavoidable. If your Subaru has high mileage (over 200,000 miles) or exhibits persistent symptoms of timing chain issues, it’s best to consult a trusted mechanic. Replacing a timing chain is a complex and labor-intensive process, but it’s far less costly than repairing engine damage caused by a broken chain.
Conclusion
In summary, Subaru timing chains are built for longevity, but they are not indestructible. Regular maintenance, such as timely oil changes and addressing engine issues promptly, can help extend their lifespan. If you notice any warning signs like rattling noises or engine misfires, don’t delay in seeking professional assistance. At Kevin’s Autos, we specialize in Subaru maintenance and repair, ensuring your vehicle stays in top condition. Contact us today to schedule an inspection or service!
Frequently Asked Questions
Can a timing chain last 200,000 miles?
Timing chains can last anywhere between 150,000 and 200,000 miles before they require repair or sustain damage. But once they do, they must be replaced without fail as they can break off entirely, therefore causing the engine to fail.
What Subaru models have a timing chain?
All Foresters from 2011 onward (2014 for the XT) have a timing chain.
How do I know when my timing chain needs replacing?
These signs include:
- Rattling Sound on Starting The Engine or Idling. A common finding in a vehicle with a bad timing chain is unusual rattling noise when the engine is started or when brakes are engaged.
- Misfiring Engine.
- Contaminated Engine Oil.
- Check Engine Light.
- Inability to Start The Engine.
Do Subaru timing chains need to be replaced?
A timing belt is rubber-based, and will need to be replaced at certain maintenance intervals. A timing chain is bulkier and louder; however, it does not require replacement. Though a repair might be necessary in some rare occasions, most timing chains last for the entire life of the engine.
What years did Subaru have CVT problems?
The models and years that were affected mainly by transmission issues are:
- Crosstrek, 2013 – 2015.
- Crosstrek Hybrid, 2014 – 2015.
- Forester (2.0 and 2.5 liter engines), 2014 – 2015.
- Impreza, 2012 – 2015.
- Legacy, 2010 – 2015.
- Legacy 3.6L V6, 2015.
- Outback, 2010 – 2015.
- Outback 3.6L V6, 2015.
When should the timing chain be replaced on a 2014 Subaru Outback?
Subaru timing belts need to be replaced after seven years or 105,000 miles; whichever comes first.
Does a 2015 Subaru Outback have a timing belt or timing chain?
Both engines found in 2015 Outbacks sold in North America—the four-cylinder FB25B engine and the six-cylinder EZ36D engine—use a timing chain, not a timing belt (the six-cylinder engine actually has two chains).
At what mileage should a timing chain be replaced?
Timing chains are designed to last a long time, typically between 100000 to 200000 miles (or about 160000 to 320000 kilometers). Unlike timing belts, which require regular replacement, timing chains generally do not have a specific replacement interval.
Can a timing chain last 200 000 miles?
Timing chains can last anywhere between 150,000 and 200,000 miles before they require repair or sustain damage. But once they do, they must be replaced without fail as they can break off entirely, therefore causing the engine to fail.
What year did Subaru change to timing chains?
2011
2011 was the first year for the newest version of the 2.5L normally aspirated engine. Years previous to 2011 the 2.5L, as did all Subaru flat four engines, used a timing belt. Beginning in 2011 the 2.5L uses a timing chain.
