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Timing Chain Replacement Costs: Everything You Need to Know

Timing Chain Replacement Costs

When it comes to replacing the timing chain in your engine you need to be sure that it's actually a timing chain you're looking for. Timing belts and timing chains do the same job but they have different names for a reason. A timing belt is made of rubber, a timing chain is made of steel. Timing belts have mostly replaced timing chains but not totally. The cost of replacing a timing belt or a timing chain is generally anywhere from $300 to $500.

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If you head to AutoZone right now you can find timing chains that cost you anywhere from $25 to $100 or more. There are also timing sets which include the gears you need that can cost anywhere from $15 to $250. And of course there are rubber timing belts which can be under $20.


Obviously what you need depends very heavily on the type of vehicle that you drive. You can get performance timing sets that are meant for racing cars. Timing chains are often only necessary in older vehicles, or some more heavy duty vehicles that require the extra strength of a steel chain.


Smaller vehicles tend to have timing chains that are easier to access, which means the labor cost associated with having these replaced is probably going to be less. In a large vehicle like an SUV it may be harder for your mechanic to get down into the engine and take off your old belts and put a new one on. That could increase your labor charge. The labor costs for a job like this could be anywhere from $200 to $400 or more.


As with any repair job, the make and model of your vehicle can greatly affect the outcome. Some cars are just more expensive to repair than others. Likewise, the cost for one mechanic to  another can vary greatly even within the same town.


If you don't have a mechanic that you currently trust to give you good service at a good price, your best bet is to head to Google and do some research. It's never a bad idea to ask friends and family, or look for reviews online to find out if a mechanic is reliable and trustworthy.


In the digital age we have an advantage that we didn't have 20 or 30 years ago when it comes to finding mechanics. Nowadays you can look at reviews on Google and sites like Yelp to determine whether or not it's worth your time and money to go see a particular mechanic. You should always trust your instincts, but it never hurts to look over the experiences that other people have had. If a local mechanic has 400 people saying they had a great experience with them, it's probably a safe bet that you can rely on that mechanic.


What Is a Timing Chain? 


If you take a look at the engine of your car there is a crankshaft that rotates inside of it. The pistons are connected to this and as the crankshaft rotates the pistons pump up and down. The crankshaft is connected to the camshaft that has valves that open and close in time with the Pistons pumping up and down. The camshaft and the crankshaft are connected by the timing belt that is attached by the gears. As one turns the other turns thanks to the movement of the timing chain. 


The name timing chain comes from the fact that it synchronizes the movements between these two parts of your engine. Everything has to work in a precisely timed order. The pistons go up and down as the valves open and close in perfect synchronicity. That's how your engine works, and if the timing chain slips or fails then the entire engine is thrown off that precision time.


 Signs of a Bad Timing Chain


  • Engine Misfires: If your timing chain breaks or wears out then it can cause the whole thing to just slide off of a gear.  If the belt is no longer attached to your gears then the cylinders will open and close at the wrong time. That means nothing is going to fire in the correct order, and you can end up having an engine misfire. If the timing belt has gotten to this point, it's a serious problem that needs to be repaired right away.


  • Lack of Oil Pressure: This is more common with a timing belt than a timing chain due to the fact that timing belts are made from rubber. If your timing belt wears down, or slips off a gear and a piece breaks, the pieces of rubber can fall into the oil pan. That's going to interfere with your car's ability to circulate oil properly. That in turn means you're going to get a decrease in oil pressure. If this goes on for too long, your engine will be without proper lubrication and cooling, which could end up leading to a catastrophic failure.


  • Engine Smoke: Part of the precision timing that is controlled by your timing belt is how the exhaust is let out and air is let in. There are openings in every cylinder that allow for these gases to pass through. If the synchronization is off because your timing belt is slipping and failing, then the air and the exhaust will be let out at the wrong times. That in turn can lead to an excessive amount of smoke coming out of the back of your vehicle. Typically this will be white smoke, and it can be hard to notice if it happens during the winter as you might think it is just normal exhaust venting in the cold air.


  • Rough Idling: Your timing belt has little teeth in it that grip the gears as the belt rotates. When everything is working normally, you don't notice the belt rotating along the gears of the crankshaft and a camshaft. However, if it begins to fail, those little teeth can become loose and tear off. If they fall into the gears below, they can actually jam and cause the engine to sputter and vibrate, cause rough idling, and eventually stall because the timing is no longer precise.


  • Damaged Valves and Pistons: If your timing chain or belt fails completely and comes right off  the gears, you have a serious problem. This will not stop the crankshaft from spinning, but the camshaft will not be synchronized with it any longer. That means the pistons will hit the valves because they're not opening and closing at the right time. That could warp the valves and physically damage the pistons. Replacing damaged valves and pistons in your engine can be extremely costly repair, upwards of several thousand dollars. 


It's worth remembering that the timing belts in your car is one of those parts that needs routine maintenance. Just like an oil filter, you can't simply let this part go for the life of your car. Timing belts can only last for so long and should be replaced based on your manufacturer's guidelines. You can check your owner's manual to find out for sure when this is, but a good rule of thumb is that 75,000 to 100,000 miles is going to mean it's time to replace the timing belt. This is one of the most important things to make sure you maintain under the hood. You never want to leave a timing  belt until it snaps


What if I Don't Replace My Timing Chain? 


Not replacing a timing belt or timing chain in your engine would be a big mistake. Preventive maintenance is well worth your effort in this case because the couple hundred dollars you pay to replace the timing belt before it breaks can save you a couple thousand dollars after it breaks.


When your timing chain snaps completely, if you were driving down the highway at that moment with your engine under a lot of stress, when your pistons hit the valves in your engine you were going to cause some serious damage inside the engine. If it's bad enough, you might have to end up doing a complete motor repair on your vehicle. You're looking at costs starting at a bare minimum of $2,000 to cover all the potential damage. This is definitely not the kind of thing that you want to happen.


Can I Replace My Own Timing Belt? 


It seems like on the surface that replacing the timing belt may not be that difficult task, but this is one that you might want to leave to the professionals. It was a deceptively difficult task to change a timing belt for someone who is not familiar with car repairs already. If you've never done this job before, and you're not well-versed in how the timing belt works already, it may not be the best repair to start your journey on DIY repairs with.


The problem with doing a timing belt replacement on your own is that there are a few steps that are not typical to an everyday repair job. For instance, you're going to need a tool called a puller to remove the camshaft pulley. If you don't have that tool already it's going to cost you a good chunk of change to get one. If you don't know how to use one already, then you have to figure that out as well.


The parts are already going to set you back a couple hundred dollars, and if you need to buy some specialized tools you're at the point where it may be more economical and safer to simply get a mechanic to do it. At least then you know the person doing the job has done this before and has the skill and know-how to get it done safely. There's no harm in admitting that some jobs are just better left to professionals at the end of the day.


 hat said, of course you could still try this on your own. Just know that you need to get the puller tool and it's probably best to not just buy a timing belt, but the entire timing kit that includes the tensioners and the gears that you need as well. If you're replacing the timing belt anyway, it's a good thing to get brand new gears in there as well so that the whole system will have the same lifespan. You don't want to have a new belt and then be relying on gears that may have already gone through 60,000 miles worth of travel that could be weakening and getting ready to fail on their own.


Another thing to consider is that a lot of times when the timing chain is being replaced, mechanics will take a look at your water pump and replace that at the same time since they're down in that area. That adds another consideration if you want to pull this off on your own. You'll need to get the parts for that as well, or know that if you leave it it  may need to be looked into as well further down the road.


If you're already confident in your abilities to do some basic to intermediate car repairs, and you have access to the required tools, that it's worth a shot. You can actually rent some of the tools you need from a number of places online including AutoZone if that's the consideration you want to make.


The Bottom Line


Back in the day, mechanics were changing broken timing chains and timing belts much more frequently than they do today. The reason it doesn't happen as often anymore is not that the belts and chains are being made of superior materials and lasting longer, is that drivers are more educated. People are aware now that these things need to be changed before they break because preventive maintenance will save you a lot of money in the long run.


 You should always keep a schedule of repairs and when they need to be done on your vehicle. Just like you know when you need to have your oil changed and the filters checked out, you should put the timing belt on that list as well just to make sure your car is running as well as it can all the time. 


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