Is the timing chain to be replaced? It's controversial

Do you need to replace the timing chain? And this one is actually controversial because some cars have never been replaced even after being scrapped. But due to issues with the chain, it is common for the piston to crown the valve and cause engine overhaul. So, let's study together today. The traditional timing belt, as we all know, is prone to aging over time, so it needs to be replaced regularly.

Compared to that, chains are different. They have a longer lifespan, but even if the chain is used for a long time, it will still be stretched out. So at this point, a core component comes in handy, which is the one in my hand. Let's take a look together, it's called a tensioner? After it is installed, it looks like this.

So what about here? We are using a tensioner to apply pressure to our chain. What about that? Even if it is stretched out, it will give pressure to ensure that it remains unchanged. What about the tensioner? What happened during the installation when we just saw it? He probably popped up so many times. As time goes by, the chain becomes longer and longer, what about the structure inside?

We have opened one for everyone, can you take a look inside the tensioner? It has a spring, and there is also an oil circuit inside, which comes from a pressure source. So as time goes by, the chain becomes more and more loose, so what about the tensioner? To make up for it, ultimately? It can produce so much pressure from the chain, about 3CM, so even if there is a tensioner and the chain is loose, there is nothing to do after 3CM.

When did the chain really get stretched and need to be replaced? In fact, the ECU of the engine has data. Let's take a look at real-time data monitoring through the crankshaft position sensor here and the camshaft position sensor above. What about the suggestion? What about when your car is 100000 kilometers away? When conducting regular maintenance, remember to check the computer data of the engine to determine whether you need to replace it, rather than blindly following the trend of replacement