Parts for your 2016 Subaru Forester

The Role and Maintenance of the Timing Belt in the 2016 Subaru Forester

When it comes to the 2016 Subaru Forester, one important component to know about is the timing belt. If you're looking at the engine setup on this model, you might wonder whether it relies on a timing belt or a timing chain. For the 2016 Forester, equipped with Subaru's 2.5-litre four-cylinder Boxer engine, the vehicle uses a timing chain rather than a timing belt.

Now, why is this the case? Timing belts and timing chains serve the same fundamental role in an engine - they synchronise the rotation of the crankshaft and camshaft(s) so that the engine's valves open and close at the proper times during each cylinder's intake and exhaust strokes. This precise timing is essential for efficient engine operation and to prevent piston-to-valve contact, which can cause severe engine damage.

The reason the 2016 Forester uses a timing chain instead of a timing belt comes down to design choices by Subaru and the benefits timing chains offer. Timing chains are made of metal and run inside the engine oil, which keeps them lubricated. They tend to be more durable and have a longer service life than timing belts, which are usually made from a rubber compound and require replacement at regular intervals due to wear and tear.

Subaru's decision to employ a timing chain in the 2016 Forester Boxer engine means that owners don't have to worry about scheduled timing belt replacements, which are common maintenance tasks in many other vehicles. Timing chains are generally considered 'fit and forget', requiring less regular attention. However, this doesn't mean no maintenance is required because timing chains can still wear out, stretch or suffer damage over time, especially if the engine oil is neglected.

Keeping the timing chain in good working order depends heavily on regular oil changes because the chain runs inside the engine lubricated by oil. Good quality engine oil and keeping to the recommended oil change intervals will help ensure the chain remains properly lubricated and free of excessive wear. Poor oil condition or low oil levels can lead to increased friction and premature failure of the timing chain and its associated components, such as the tensioner and guides.

If the timing chain were to fail, the engine could suffer serious internal damage. Symptoms of timing chain issues might include unusual rattling noises from the engine, especially on startup, rough idling, or trouble starting the vehicle. If any of these signs are noticed, a mechanic should inspect the timing chain system promptly.

As for servicing, since the timing chain is designed to outlast the engine's life in many cases, manufacturers like Subaru usually do not specify a replacement interval for it. Instead, the focus is on regular engine oil and filter changes and checking for any abnormal noises or engine performance issues during routine vehicle inspections.

Should a timing chain replacement ever be necessary, it is a more complex and costly procedure compared to belt replacement. This is because the timing chain is housed inside the engine, requiring significant disassembly to access it. Replacement likely involves changing the chain itself along with the tensioners, guides, and related components to ensure everything is renewed and works properly.

In essence, the timing chain in the 2016 Subaru Forester offers greater long-term reliability and peace of mind compared to a timing belt. For owners, the key takeaway is to stick to Subaru's recommended service intervals for oil changes, keep an eye out for any symptoms of timing chain wear, and service the vehicle regularly to prevent any costly repairs down the track.