So what distinguishes a timing chain from a timing belt? Both a timing chain and belt perform the same basic function. These mechanisms are created to maintain the relative position of the valves opening and closing to the position of the piston as the engine is running, regardless of whether you drive a Porsche, Mercedes Benz, or BMW with an internal timing chain, or an Audi or Volkswagen with an external timing belt. When a valve is opened at the incorrect time, it may come into contact with the piston and cause a catastrophic engine failure.
The piston will raise (building compression) and the valves will open precisely, allowing air and fuel to enter the combustion chamber and exhaust to depart in less than one thousandth of a second in an engine with perfectly timed ignition. When valves open or close prematurely or lately due to a timing issue, the piston will be driven into the valve, most frequently bending the valve and possibly punching a hole in the piston crown, rendering the engine worthless. These fixes could cost as little as $4,000 to $5,000 or, depending on the engine, much more.
An internal timing chain is used by brands including Porsche, BMW, and Mercedes-Benz. These chains are stronger and less prone to break on their own. The same outcome is more frequently experienced when other chain-holding components, including chain tensioners and chain guides, fail. Check engine lights and a rattling sound, which is typically heard while starting an engine, are early warning indicators of a breakdown.
Initially using timing chains, Audi and Volkswagen switched to an external timing belt in the 1980s, 1990s, and the majority of the 2000s (now returning to chain drive systems). The timing belt is simpler to inspect and replace than the timing chain. On most models, replacing a timing belt with all associated parts (including a water pump on most models) costs between $700 and $900, which is significantly less than doing the same for a timing chain. The external timing belt’s drawback is that, like all belts, it eventually wears out and needs to be replaced. Timing belts should typically be changed every 80,000 miles, or every five years. Each time they are serviced or at least once a year, these should be visually inspected.
It’s vital to keep in mind that modern German performance cars, whether you drive a Porsche, Mercedes Benz, BMW, Volkswagen, or Audi, will last you for many miles and years if you maintain them properly. Count on our specialists in Austin for Porsche, Mercedes Benz, Volkswagen, Audi, and BMW repairs. Simply drop by German Auto Center and ask if you have any questions. At 8215 Research Blvd, we are conveniently and centrally situated, and we are here to help.
In This Article...
Which Audi models come with timing chains?
Every Audi A4 produced between 2010 and 2021 has an interference engine with a timing chain. All 4 cylinder A4s use timing belts from 2007 to 2008, whereas V6s have chains.
In 2008, the sedans have a timing chain while the cabriolets (convertibles) have a timing belt.
For instance, whereas the 2009 Audi A4 2.0L 4 Cyl. Turbo 200 horsepower (FSI), Cabriolet option has a timing belt, the 2021 Audi A4 2.0L 4 Cyl. Turbo 201 hp (40) option has a timing chain.
Is there a timing belt or chain on the Audi 2.0 T?
Time for another 2.0L TSI Audi engine tip! Owners of 2008 or newer Audi and VW vehicles are well acquainted with the 2.0L Turbo Straight Injection (TSI) 4-cylinder engine. These engines were created to have the least amount of displacement while still producing a large amount of power.
For the most part, the 2.0L TSI is a well-built engine. With far higher fuel efficiency, it can produce 200 horsepower and the feel of a 6-cylinder engine. Yet there is one significant impediment. The timing chain in these engines has the potential to be extremely problematic.
Numerous customers have visited German Auto Center for complete engine rebuilds after the timing chain tensioner failed. When the timing chain becomes faulty, this “stretched (by as much as 2 inches), which results in the chain jumping and all the valves bending. The engine is essentially wrecked after this occurs.
What then triggers this timing chain stretching that destroys engines? soiled oil Many motorists are unaware that worn-out oil that isn’t lubricating the timing chain rollers might accelerate their deterioration. Timing chain rollers deteriorate with use, and this is when the “Stretching takes place.
We are starting to encounter 1-2 Audis each week that need extensive engine repairs because the issue is so widespread. It’s a problem that often surfaces shortly after the warranty expires, around the 60,000-mile mark.
Fortunately, the solution is relatively simple. Change the oil much more frequently than the 20,000-mile interval Audi advises (after the first five). Our technicians now advise that you replace your oil every 5,000 miles because they have dealt with timing chain problems repeatedly. Additionally, a substance like complete Mobile 1 synthetic oil is recommended.
This frequency will keep your oil clean so that problems with your timing chain and tensioner are avoided, combined with high-quality oil and filters. This type of maintenance is worthwhile because dirty oil also contributes to a ton of other engine issues.
More frequent oil changes cost a bit more, but you’ll save thousands by preventing an engine disaster that renders your car inoperable.
Is a new timing chain required for an Audi?
Timing chains do not require routine replacement, but timing belts do. The timing chain shouldn’t need to be changed unless it has been harmed, overworked, or otherwise compromised. Your car will most likely experience one or more faults if there is a timing chain issue.
A broken timing chain will show the symptoms listed below:
- Starting the car is challenging.
- The timing chain has noise.
- The check engine light is on.
- Misfiring engines and sluggishness
- The engine shakes or rattles while it is idling.
- The vehicle won’t start
There’s a chance you’ll notice a noise coming from the timing chain cover region. This noise is frequently the result of a loose timing chain, which may be brought on by a broken timing chain tensioner, guide, or other issues. More serious issues will arise if you ignore the early warning signs, so be sure to check the timing chain as soon as you hear a noise coming from where it is mounted.
Check engine sensor on the dashboard illuminates
Your check engine light coming on could indicate a very catastrophic issue. Numerous problems can cause this sensor to be activated, thus they need to be fixed very away. The check engine light may illuminate due to a broken or dysfunctional timing chain. These problems can be inspected, identified, and fixed by a qualified Audi mechanic.
Rattling, clicking, or odd noises when the vehicle is idling
Your Audi should ideally idle quietly, smoothly, and peacefully. Strange noises should be a clear warning sign that anything is broken. Unusual noises under your hood may result from a timing chain that is loose, worn out, or breaking down because it will vibrate and tremble.
Metal shaving, particles, or debris in the oil
Only a routine oil change, which is advised for any car every 3,000 to 5,000 miles, can find these problems. Tiny metal fragments can separate off the chain when it begins to wear down and fall into the engine’s oil supply. After the old oil has been emptied from the motor, these metal shavings or particles are very noticeable in the oil pan. Even though this might be a sign of anything else, a worn-out timing chain is more likely to be the cause.
Total failure of the engine
Catastrophic effects may arise if the timing chain malfunctions. This results in the motor’s ultimate failure and may cause a catastrophic breakdown. If this happens while your Audi is operating, it will also harm the pistons and bend the valves. Any of the aforementioned problems can seriously impair your car’s overall performance. It will cost a lot of money to fix the issue.
The engine will misfire
The timing chain may become slack and extend as your car ages. The chain may therefore cause the engine to skip gears as well as mess with its timing calibration. Poor performance due to a misfire and a lack of horsepower from the motor will be the final result.
Timing chain problems can have very catastrophic repercussions if they are not found and fixed right away. If you ever have any suspicions about such a problem, you should get in touch with a dependable, knowledgeable auto repair shop so they can identify the issue and make the required fixes.
Is there a timing chain or belt on an Audi A4?
The FSI engine is propelled by a timing belt system that synchronizes the rotation of the crankshaft, camshafts, and cylinder head. This Audi A4’s timing belt system uses a corded/molded rubber timing belt that is wear-resistant and highly durable (a.k.a. Audi A4 toothed belt).
How much does an Audi timing chain replacement cost?
Best in Automotive Repair Timing chain tensioner replacements for Audi A4 Quattro models typically cost between $1,092 and $1,274. While materials are priced at $393, labor costs are predicted to range from $699 to $881. Taxes and other fees are not included in this range, nor are your particular model year or geographic area taken into account.
Is there a timing belt or chain on the Audi A5 2.0 T?
Timing chains are standard on all Audi A5 engines from the model years 2008 through 2021. From 2008 to 2021, every Audi A5 engine is interference.
In a combustion engine, the timing belt (or chain) maintains the correct synchronization between the various engine parts.
Serious engine damage may result if the belt or chain strains or breaks.
Timing chains are typically rated for the lifespan of the engine, while timing belts have a suggested replacement interval, however they do need to be inspected on occasion.
Understanding the timing system in your car or a potential purchase might help you save future costs and hassles.
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A timing chain’s durability is 200 000 miles.
Timing chain vibration is prevented by using chain guides and silencers. Each of these parts ages as well. How can you tell if the timing chain needs replacing?
When the timing chain is worn, the engine frequently feels sluggish, has little power, or is difficult to start. Perhaps the Check Engine light will also come on. This is due to the fact that as the chain ages, it stretches and the ignition and valve timing advance more. Numerous noises coming from the engine’s timing chain cover area can also be caused by a worn timing chain, chain guides, or chain tensioner. The timing chain noises can be whirring, whining, buzzing, whining, or rattling.
If the timing chain needs to be replaced due to wear, a new tensioner, guides, and other chain drive mechanism components are often included with the kit. The motors of many cars have two or even three chains, and frequently your auto repair shop will advise replacing all the chains at once.
Depending on the vehicle model, timing chain replacement costs might range from $370 to $1,500.
Finding the right process to set the timing when a new chain is inserted is necessary if you intend to replace the timing chain yourself. This kind of information can be found in the service handbook for your car.
It’s rather simple to replace the timing chain in old-style pushrod engines. If you drive a new front-wheel drive vehicle with a transversely positioned engine, you may not have such luck because the engine compartment may be relatively small. In a V6 engine, it becomes considerably more challenging.
Maintaining your engine properly and changing the engine oil at specified intervals will help you avoid timing chain issues. Oil filters and engine oils of the highest caliber should be used. The timing chain will always be lubricated if the oil level is maintained at the right level. Given that many modern engines are known to use oil, this is extremely crucial. A timing chain in a well-maintained engine can last up to 300,000 miles or even more.